Страница 33, часть 2 - гдз по физике 8 класс учебник часть 1, 2 Генденштейн, Булатова

Авторы: Генденштейн Л. Э., Булатова А. А., Корнильев И. Н., Кошкина А. В.

Тип: Учебник

Издательство: Просвещение

Год издания: 2019 - 2026

Уровень обучения: базовый

Часть: 2

Цвет обложки: бирюзовый

ISBN: 978-5-09-107478-9

Часть 2. Cтраница 33

App\Models\BookPage {#1003 // resources/views/models/book_page/default.blade.php
  #connection: "mysql"
  #table: "book_pages"
  #primaryKey: "id"
  #keyType: "int"
  +incrementing: true
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  #perPage: 15
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  #escapeWhenCastingToString: false
  #attributes: array:21 [
    "id" => 1494767
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "33"
    "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-33"
    "field_display_title" => "33"
    "field_folder" => "2"
    "field_image_name" => "33"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1046
      #items: array:1 [
        0 => App\Models\Branch {#1008
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1493725
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_branch_order" => "2"
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1007
              #items: array:1 [
                0 => App\Models\Term {#1006
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
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                  #attributes: array:7 [
                    "id" => 31
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Часть"
                    "field_cases" => array:6 [ …6]
                    "field_page_check_not_needed" => "1"
                    "field_short_name" => "ч."
                  ]
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                    "id" => 31
                    "created_at" => "2026-04-10 13:58:26"
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                    "name" => "Часть"
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                    "field_page_check_not_needed" => "1"
                    "field_short_name" => "ч."
                  ]
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                }
              ]
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            }
            "field_page_start" => "4"
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            "field_branch_cover" => []
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            "book" => Illuminate\Database\Eloquent\Collection {#1009
              #items: array:1 [
                0 => App\Models\Book {#1010
                  #connection: "mysql"
                  #table: "books"
                  #primaryKey: "id"
                  #keyType: "int"
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                    "created_at" => "2026-04-10 13:58:26"
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                    "field_country" => Illuminate\Database\Eloquent\Collection {#1025 …2}
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                    "field_series" => Illuminate\Database\Eloquent\Collection {#1029 …2}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1030 …2}
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                  ]
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                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1033 …2}
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                    "breadcrumbs" => array:3 [ …3]
                  ]
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                    "field_patronymic" => "Николаевич"
                    "field_surname_rp" => null
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                3 => App\Models\Term {#1056
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [
                    "id" => 4758
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Кошкина"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Анжелика"
                    "field_patronymic" => "Васильевна"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 4758
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Кошкина"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Анжелика"
                    "field_patronymic" => "Васильевна"
                    "field_surname_rp" => null
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1057
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1058
              #items: array:1 [
                0 => App\Models\Term {#1059
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [
                    "id" => 6671
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Учебник"
                    "field_book_type_foreign" => null
                    "field_cases" => array:6 [ …6]
                    "field_plural_form" => null
                    "field_short_name" => null
                    "field_short_name_foreign" => null
                    "field_translit" => "uchebnik"
                  ]
                  #original: array:10 [
                    "id" => 6671
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Учебник"
                    "field_book_type_foreign" => null
                    "field_cases" => array:6 [ …6]
                    "field_plural_form" => null
                    "field_short_name" => null
                    "field_short_name_foreign" => null
                    "field_translit" => "uchebnik"
                  ]
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_country" => Illuminate\Database\Eloquent\Collection {#1060
              #items: array:1 [
                0 => App\Models\Term {#1061
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 9
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "rossiya"
                  ]
                  #original: array:6 [
                    "id" => 9
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "rossiya"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #relations: []
                  #touches: []
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                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_city" => Illuminate\Database\Eloquent\Collection {#1062
              #items: array:1 [
                0 => App\Models\Term {#1063
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 15
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Москва"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "moskva"
                  ]
                  #original: array:6 [
                    "id" => 15
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Москва"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "moskva"
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_series" => Illuminate\Database\Eloquent\Collection {#1064
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1065
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1066
              #items: array:1 [
                0 => App\Models\Term {#1067
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 38
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "базовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "bazovyy"
                  ]
                  #original: array:6 [
                    "id" => 38
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "базовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "bazovyy"
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
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                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1068
              #items: array:1 [
                0 => App\Models\Term {#1069
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [
                    "id" => 25
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "ФГОС (новый)"
                    "field_cases" => array:6 [ …6]
                    "field_color" => "красный"
                    "field_end_year" => "2027"
                    "field_start_year" => "2023"
                    "field_translit" => "fgos"
                    "field_type" => "новый"
                  ]
                  #original: array:10 [
                    "id" => 25
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "ФГОС (новый)"
                    "field_cases" => array:6 [ …6]
                    "field_color" => "красный"
                    "field_end_year" => "2027"
                    "field_start_year" => "2023"
                    "field_translit" => "fgos"
                    "field_type" => "новый"
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publication_number" => null
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1070
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1071
              #items: array:1 [
                0 => App\Models\Term {#1072
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [
                    "id" => 5395
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Орлов"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Владимир"
                    "field_patronymic" => "Алексеевич"
                    "field_surname_rp" => "Орлова"
                  ]
                  #original: array:12 [
                    "id" => 5395
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Орлов"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Владимир"
                    "field_patronymic" => "Алексеевич"
                    "field_surname_rp" => "Орлова"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition_degree" => null
            "field_cover_description" => null
            "field_publication_year" => "2019"
            "field_publication_year_until" => null
            "field_part" => "1, 2"
            "field_part_writing" => "Часть"
            "field_second_foreign_language" => null
            "field_for_whom" => "Учебное пособие"
            "field_allowed" => null
            "field_reserve_field" => null
            "field_link_to_source" => null
            "field_tasks_count" => "832"
            "field_priority" => null
            "field_default_folder" => "/fizika_08/gendenshtejn-u/"
            "field_isbn" => "978-5-09-107478-9"
            "field_cover" => array:2 [
              0 => "/media/fizika_08/gendenshtejn-u/covers/cover1.webp?ts=1761057427"
              1 => "/media/fizika_08/gendenshtejn-u/covers/cover2.webp?ts=1761057427"
            ]
            "field_cover_alts" => array:2 [
              0 => ""
              1 => ""
            ]
            "field_covers" => array:2 [
              0 => array:4 [
                "path" => "/media/fizika_08/gendenshtejn-u/covers/cover1.webp?ts=1761057427"
                "alt" => ""
                "width" => "1873"
                "height" => "2761"
              ]
              1 => array:4 [
                "path" => "/media/fizika_08/gendenshtejn-u/covers/cover2.webp?ts=1761057427"
                "alt" => ""
                "width" => "1858"
                "height" => "2754"
              ]
            ]
            "field_popular_book" => "0"
            "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1073
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1074
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_old_book" => Illuminate\Database\Eloquent\Collection {#1075
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1076
              #items: array:1 [
                0 => App\Models\Term {#1077
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 6978
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "бирюзовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "biruzovyy"
                  ]
                  #original: array:6 [
                    "id" => 6978
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "бирюзовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "biruzovyy"
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "breadcrumbs" => array:3 [
              "class" => 379
              "subject" => 556
              "class_subject" => 492
            ]
          ]
          #original: array:50 [
            "id" => 2219
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
            "field_pages_status" => null
            "field_subject" => Illuminate\Database\Eloquent\Collection {#1047}
            "field_class" => Illuminate\Database\Eloquent\Collection {#1048}
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1050}
            "field_author" => Illuminate\Database\Eloquent\Collection {#1052}
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1057}
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1058}
            "field_country" => Illuminate\Database\Eloquent\Collection {#1060}
            "field_city" => Illuminate\Database\Eloquent\Collection {#1062}
            "field_series" => Illuminate\Database\Eloquent\Collection {#1064}
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1065}
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1066}
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1068}
            "field_publication_number" => null
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1070}
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1071}
            "field_under_the_edition_degree" => null
            "field_cover_description" => null
            "field_publication_year" => "2019"
            "field_publication_year_until" => null
            "field_part" => "1, 2"
            "field_part_writing" => "Часть"
            "field_second_foreign_language" => null
            "field_for_whom" => "Учебное пособие"
            "field_allowed" => null
            "field_reserve_field" => null
            "field_link_to_source" => null
            "field_tasks_count" => "832"
            "field_priority" => null
            "field_default_folder" => "/fizika_08/gendenshtejn-u/"
            "field_isbn" => "978-5-09-107478-9"
            "field_cover" => array:2 [
              0 => "/media/fizika_08/gendenshtejn-u/covers/cover1.webp?ts=1761057427"
              1 => "/media/fizika_08/gendenshtejn-u/covers/cover2.webp?ts=1761057427"
            ]
            "field_cover_alts" => array:2 [
              0 => ""
              1 => ""
            ]
            "field_covers" => array:2 [
              0 => array:4 [
                "path" => "/media/fizika_08/gendenshtejn-u/covers/cover1.webp?ts=1761057427"
                "alt" => ""
                "width" => "1873"
                "height" => "2761"
              ]
              1 => array:4 [
                "path" => "/media/fizika_08/gendenshtejn-u/covers/cover2.webp?ts=1761057427"
                "alt" => ""
                "width" => "1858"
                "height" => "2754"
              ]
            ]
            "field_popular_book" => "0"
            "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1073}
            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1074}
            "field_old_book" => Illuminate\Database\Eloquent\Collection {#1075}
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1076}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "breadcrumbs" => array:3 [
              "class" => 379
              "subject" => 556
              "class_subject" => 492
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "edition_groups" => Illuminate\Database\Eloquent\Collection {#1078
      #items: []
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1089
      #items: array:1 [
        0 => App\Models\Element {#1088
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 1776774
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1098
              #items: array:1 [
                0 => App\Models\Edition {#1090
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [
                    "id" => 6500
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1092 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "stas"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1093 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1094 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 6500
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1092 …2}
                    "field_content_type" => "free"
                    "field_content_mode" => "text, image"
                    "field_page_content_mode" => "image"
                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "stas"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1093 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1094 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1095 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "book_page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "33-1.jpg"
                "alt" => null
                "width" => "1885"
                "height" => 2837
                "path" => "/media/fizika_08/gendenshtejn-u/0-2/33-1.webp?ts=1761348258"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 1776774
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1098}
            "book_page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "33-1.jpg"
                "alt" => null
                "width" => "1885"
                "height" => 2837
                "path" => "/media/fizika_08/gendenshtejn-u/0-2/33-1.webp?ts=1761348258"
              ]
            ]
          ]
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "next" => Illuminate\Database\Eloquent\Collection {#5095
      #items: array:1 [
        0 => App\Models\BookPage {#5094
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:21 [
            "id" => 1494768
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "34"
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-34"
            "field_display_title" => "34"
            "field_folder" => "2"
            "field_image_name" => "34"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5100
              #items: array:1 [
                0 => App\Models\Branch {#1107
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1493725
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => null
                    "field_branch_order" => "2"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1109 …2}
                    "field_page_start" => "4"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1110 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1144 …2}
                  ]
                  #original: array:24 [
                    "id" => 1493725
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => null
                    "field_branch_order" => "2"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1109 …2}
                    "field_page_start" => "4"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1110 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1144 …2}
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5099
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#5098
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#5127
              #items: array:1 [
                0 => App\Models\Element {#5126
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1494769"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5114
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1494768
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "34"
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-34"
            "field_display_title" => "34"
            "field_folder" => "2"
            "field_image_name" => "34"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5100}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5099}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#5098}
            "content" => Illuminate\Database\Eloquent\Collection {#5127}
            "next" => array:2 [
              "refs" => "1494769"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5114}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#5090
      #items: array:1 [
        0 => App\Models\BookPage {#5089
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:21 [
            "id" => 1494766
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "32"
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-32"
            "field_display_title" => "32"
            "field_folder" => "2"
            "field_image_name" => "32"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5091
              #items: array:1 [
                0 => App\Models\Branch {#1107}
              ]
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5092
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#5093
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#5103
              #items: array:1 [
                0 => App\Models\Element {#5102
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1494765"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5107
              #items: array:1 [
                0 => App\Models\Task {#5106
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1494766
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "32"
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-32"
            "field_display_title" => "32"
            "field_folder" => "2"
            "field_image_name" => "32"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5091}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5092}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#5093}
            "content" => Illuminate\Database\Eloquent\Collection {#5103}
            "next" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1494765"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5107}
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "tasks" => Illuminate\Database\Eloquent\Collection {#1082
      #items: array:4 [
        0 => App\Models\Task {#1102
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1494177
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1106
              #items: array:1 [
                0 => App\Models\Term {#1103
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1105
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1104
              #items: array:1 [
                0 => App\Models\Branch {#1008}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1336
              #items: array:3 [
                0 => App\Models\Branch {#1107}
                1 => App\Models\Branch {#1145
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Branch {#1221
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1335
              #items: array:2 [
                0 => App\Models\Element {#1346
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1348
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1494178"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494176"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1343
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1494177
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1106}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1105}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1104}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1336}
            "content" => Illuminate\Database\Eloquent\Collection {#1335}
            "next" => array:2 [
              "refs" => "1494178"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494176"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1343}
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
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          #attributeCastCache: []
          #dateFormat: null
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          #relations: []
          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1338
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1494178
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-3"
            "field_display_title" => "3"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1337
              #items: array:1 [
                0 => App\Models\Term {#1103}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1345
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1341
              #items: array:1 [
                0 => App\Models\Branch {#1107}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1339
              #items: array:3 [
                0 => App\Models\Branch {#1107}
                1 => App\Models\Branch {#1145}
                2 => App\Models\Branch {#1221}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1340
              #items: array:2 [
                0 => App\Models\Element {#1364
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  +preventsLazyLoading: false
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                  +exists: true
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                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
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                  +timestamps: true
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                  #hidden: []
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                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1366
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #observables: []
                  #relations: []
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                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1494179"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494177"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1361
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1494178
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-3"
            "field_display_title" => "3"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1337}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1345}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1341}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1339}
            "content" => Illuminate\Database\Eloquent\Collection {#1340}
            "next" => array:2 [
              "refs" => "1494179"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494177"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1361}
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1355
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1494179
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-4"
            "field_display_title" => "4"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1342
              #items: array:1 [
                0 => App\Models\Term {#1103}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1363
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1359
              #items: array:1 [
                0 => App\Models\Branch {#1107}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1356
              #items: array:3 [
                0 => App\Models\Branch {#1107}
                1 => App\Models\Branch {#1145}
                2 => App\Models\Branch {#1221}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1358
              #items: array:2 [
                0 => App\Models\Element {#1376
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
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                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
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                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1378
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #attributes: array:6 [ …6]
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1494180"
              "type" => "task"
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            "previous" => array:2 [
              "refs" => "1494178"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1373
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1494179
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-4"
            "field_display_title" => "4"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1342}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1363}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1359}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1356}
            "content" => Illuminate\Database\Eloquent\Collection {#1358}
            "next" => array:2 [
              "refs" => "1494180"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494178"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1373}
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        3 => App\Models\Task {#1368
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1494180
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "33"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1360
              #items: array:1 [
                0 => App\Models\Term {#1103}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1375
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1371
              #items: array:1 [
                0 => App\Models\Branch {#1107}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1369
              #items: array:3 [
                0 => App\Models\Branch {#1107}
                1 => App\Models\Branch {#1145}
                2 => App\Models\Branch {#1221}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1370
              #items: array:2 [
                0 => App\Models\Element {#1388
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  +timestamps: true
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                  #hidden: []
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                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1390
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
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                  +timestamps: true
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
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              "type" => "task"
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              "refs" => "1494179"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1385
              #items: array:1 [
                0 => App\Models\Book {#1044}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
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            "id" => 1494180
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            "updated_at" => null
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            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/15-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1360}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1375}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1371}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1369}
            "content" => Illuminate\Database\Eloquent\Collection {#1370}
            "next" => array:2 [
              "refs" => "1494181"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1494179"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1385}
            "page" => array:2 [
              "refs" => "1494767"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
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    }
  ]
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    "id" => 1494767
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "33"
    "field_url" => "/8-klass/fizika/gendenshtejn-uchebnik/page-2-33"
    "field_display_title" => "33"
    "field_folder" => "2"
    "field_image_name" => "33"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1046}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1080}
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "edition_groups" => Illuminate\Database\Eloquent\Collection {#1078}
    "content" => Illuminate\Database\Eloquent\Collection {#1089}
    "next" => array:2 [
      "refs" => "1494768"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1494766"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1082}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 8 класс Учебник, авторы: Генденштейн Лев Элевич, Булатова Альбина Александрова, Корнильев Игорь Николаевич, Кошкина Анжелика Васильевна, издательство Просвещение, Москва, 2019, бирюзового цвета, Часть 2, страница 33
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