Страница 151, часть 1 - гдз по физике 9 класс учебник часть 1, 2 Генденштейн, Булатова

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

Тип: Учебник

Издательство: Бином

Год издания: 2016 - 2026

Часть: 1

Цвет обложки: бирюзовый

ISBN: 978-5-9963-3062-1

Часть 1. Cтраница 151

App\Models\BookPage {#1030 // resources/views/models/book_page/default.blade.php
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                3 => App\Models\Term {#1082
                  #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" => "2026-02-28 22:16:36"
                    "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" => "2026-02-28 22:16:36"
                    "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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1083
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1084
              #items: array:1 [
                0 => App\Models\Term {#1085
                  #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" => "2026-02-28 22:16:36"
                    "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" => "2026-02-28 22:16:36"
                    "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
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_country" => Illuminate\Database\Eloquent\Collection {#1086
              #items: array:1 [
                0 => App\Models\Term {#1087
                  #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" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "rossiya"
                  ]
                  #original: array:6 [
                    "id" => 9
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "rossiya"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_city" => Illuminate\Database\Eloquent\Collection {#1088
              #items: array:1 [
                0 => App\Models\Term {#1089
                  #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" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "Москва"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "moskva"
                  ]
                  #original: array:6 [
                    "id" => 15
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "Москва"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "moskva"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_series" => Illuminate\Database\Eloquent\Collection {#1090
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1091
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1092
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1093
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_publication_number" => null
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1094
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1095
              #items: array:1 [
                0 => App\Models\Term {#1096
                  #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" => "2026-02-28 22:16:36"
                    "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" => "2026-02-28 22:16:36"
                    "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
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition_degree" => null
            "field_cover_description" => null
            "field_publication_year" => "2016"
            "field_publication_year_until" => null
            "field_part" => "1, 2"
            "field_part_writing" => "Часть"
            "field_second_foreign_language" => null
            "field_for_whom" => "Учебное издание"
            "field_allowed" => null
            "field_reserve_field" => null
            "field_link_to_source" => null
            "field_tasks_count" => "1111"
            "field_priority" => null
            "field_default_folder" => "/fizika_09/gendenshtejn-u/"
            "field_isbn" => "978-5-9963-3062-1"
            "field_cover" => array:2 [
              0 => "/media/fizika_09/gendenshtejn-u/covers/cover1.webp"
              1 => "/media/fizika_09/gendenshtejn-u/covers/cover2.webp"
            ]
            "field_cover_alts" => array:2 [
              0 => ""
              1 => ""
            ]
            "field_covers" => array:2 [
              0 => array:4 [
                "path" => "/media/fizika_09/gendenshtejn-u/covers/cover1.webp"
                "alt" => ""
                "width" => "1863"
                "height" => "2813"
              ]
              1 => array:4 [
                "path" => "/media/fizika_09/gendenshtejn-u/covers/cover2.webp"
                "alt" => ""
                "width" => "1863"
                "height" => "2809"
              ]
            ]
            "field_popular_book" => "0"
            "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1097
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1098
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_old_book" => Illuminate\Database\Eloquent\Collection {#1099
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1100
              #items: array:1 [
                0 => App\Models\Term {#1101
                  #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" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "бирюзовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "biruzovyy"
                  ]
                  #original: array:6 [
                    "id" => 6978
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "бирюзовый"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "biruzovyy"
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #visible: []
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                  #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
            "breadcrumbs" => array:3 [
              "class" => 380
              "subject" => 556
              "class_subject" => 493
            ]
          ]
          #original: array:50 [
            "id" => 2980
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
            "field_pages_status" => null
            "field_subject" => Illuminate\Database\Eloquent\Collection {#1073}
            "field_class" => Illuminate\Database\Eloquent\Collection {#1074}
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1076}
            "field_author" => Illuminate\Database\Eloquent\Collection {#1078}
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1083}
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1084}
            "field_country" => Illuminate\Database\Eloquent\Collection {#1086}
            "field_city" => Illuminate\Database\Eloquent\Collection {#1088}
            "field_series" => Illuminate\Database\Eloquent\Collection {#1090}
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1091}
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1092}
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1093}
            "field_publication_number" => null
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1094}
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1095}
            "field_under_the_edition_degree" => null
            "field_cover_description" => null
            "field_publication_year" => "2016"
            "field_publication_year_until" => null
            "field_part" => "1, 2"
            "field_part_writing" => "Часть"
            "field_second_foreign_language" => null
            "field_for_whom" => "Учебное издание"
            "field_allowed" => null
            "field_reserve_field" => null
            "field_link_to_source" => null
            "field_tasks_count" => "1111"
            "field_priority" => null
            "field_default_folder" => "/fizika_09/gendenshtejn-u/"
            "field_isbn" => "978-5-9963-3062-1"
            "field_cover" => array:2 [
              0 => "/media/fizika_09/gendenshtejn-u/covers/cover1.webp"
              1 => "/media/fizika_09/gendenshtejn-u/covers/cover2.webp"
            ]
            "field_cover_alts" => array:2 [
              0 => ""
              1 => ""
            ]
            "field_covers" => array:2 [
              0 => array:4 [
                "path" => "/media/fizika_09/gendenshtejn-u/covers/cover1.webp"
                "alt" => ""
                "width" => "1863"
                "height" => "2813"
              ]
              1 => array:4 [
                "path" => "/media/fizika_09/gendenshtejn-u/covers/cover2.webp"
                "alt" => ""
                "width" => "1863"
                "height" => "2809"
              ]
            ]
            "field_popular_book" => "0"
            "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1097}
            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1098}
            "field_old_book" => Illuminate\Database\Eloquent\Collection {#1099}
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1100}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "breadcrumbs" => array:3 [
              "class" => 380
              "subject" => 556
              "class_subject" => 493
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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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
    "content" => Illuminate\Database\Eloquent\Collection {#1112
      #items: array:1 [
        0 => App\Models\Element {#1111
          #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" => 1697273
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1121
              #items: array:1 [
                0 => App\Models\Edition {#1113
                  #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" => 6168
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1115 …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 {#1116 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1117 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1118 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 6168
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "title" => "Условие"
                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1115 …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 {#1116 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1117 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1118 …2}
                    "field_content_source" => null
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "book_page" => array:2 [
              "refs" => "1434550"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "151-1.jpg"
                "alt" => null
                "width" => "1938"
                "height" => 2805
                "path" => "/media/fizika_09/gendenshtejn-u/0-1/151-1.webp"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 1697273
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1121}
            "book_page" => array:2 [
              "refs" => "1434550"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "151-1.jpg"
                "alt" => null
                "width" => "1938"
                "height" => 2805
                "path" => "/media/fizika_09/gendenshtejn-u/0-1/151-1.webp"
              ]
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "next" => Illuminate\Database\Eloquent\Collection {#4631
      #items: array:1 [
        0 => App\Models\BookPage {#4630
          #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:20 [
            "id" => 1434551
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "152"
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/page-1-152"
            "field_display_title" => "152"
            "field_folder" => "1"
            "field_image_name" => "152"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4636
              #items: array:1 [
                0 => App\Models\Branch {#1177
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [
                    "id" => 1433206
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "field_display_title" => null
                    "field_branch_order" => "1"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1181 …2}
                    "field_page_start" => "6"
                    "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" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1180 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1179 …2}
                  ]
                  #original: array:23 [
                    "id" => 1433206
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "field_display_title" => null
                    "field_branch_order" => "1"
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1181 …2}
                    "field_page_start" => "6"
                    "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
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                    "field_metatags_description" => null
                    "field_h1" => null
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                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1180 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1179 …2}
                  ]
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                  #attributeCastCache: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4635
              #items: array:1 [
                0 => App\Models\Book {#1070}
              ]
              #escapeWhenCastingToString: false
            }
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            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "content" => Illuminate\Database\Eloquent\Collection {#4662
              #items: array:1 [
                0 => App\Models\Element {#4652
                  #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" => 1697274
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "edition" => Illuminate\Database\Eloquent\Collection {#4663 …2}
                    "book_page" => array:2 [ …2]
                    "img" => array:1 [ …1]
                  ]
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                    "id" => 1697274
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "edition" => Illuminate\Database\Eloquent\Collection {#4663 …2}
                    "book_page" => array:2 [ …2]
                    "img" => array:1 [ …1]
                  ]
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
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            ]
            "previous" => array:2 [
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              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4650
              #items: array:2 [
                0 => App\Models\Task {#4667
                  #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" => 1433793
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
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                    "field_display_title" => "8"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4668 …2}
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#4669 …2}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#4670 …2}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4671 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#4673 …2}
                    "next" => array:2 [ …2]
                    "previous" => array:2 [ …2]
                    "book" => Illuminate\Database\Eloquent\Collection {#4679 …2}
                    "page" => array:2 [ …2]
                  ]
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                    "field_display_title" => "8"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4668 …2}
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                    "book" => Illuminate\Database\Eloquent\Collection {#4679 …2}
                    "page" => array:2 [ …2]
                  ]
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                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                1 => App\Models\Task {#4674
                  #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" => 1433794
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
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                    "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-9"
                    "field_display_title" => "9"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4672 …2}
                    "field_metatags_title" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#4681 …2}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#4677 …2}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4675 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#4676 …2}
                    "next" => array:2 [ …2]
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                    "book" => Illuminate\Database\Eloquent\Collection {#4691 …2}
                    "page" => array:2 [ …2]
                  ]
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4675 …2}
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                  ]
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              #escapeWhenCastingToString: false
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          ]
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      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#4627
      #items: array:1 [
        0 => App\Models\BookPage {#4626
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #attributes: array:20 [
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            "created_at" => "2026-02-28 22:16:36"
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            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4628
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4629
              #items: array:1 [
                0 => App\Models\Book {#1070}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "content" => Illuminate\Database\Eloquent\Collection {#4639
              #items: array:1 [
                0 => App\Models\Element {#4638
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "edition" => Illuminate\Database\Eloquent\Collection {#4640 …2}
                    "book_page" => array:2 [ …2]
                    "img" => array:1 [ …1]
                  ]
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                    "updated_at" => null
                    "edition" => Illuminate\Database\Eloquent\Collection {#4640 …2}
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                  ]
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            "tasks" => Illuminate\Database\Eloquent\Collection {#4643
              #items: array:1 [
                0 => App\Models\Task {#4642
                  #connection: "mysql"
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      ]
      #escapeWhenCastingToString: false
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    "tasks" => Illuminate\Database\Eloquent\Collection {#1102
      #items: array:3 [
        0 => App\Models\Task {#1124
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1128
              #items: array:1 [
                0 => App\Models\Term {#1125
                  #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" => 26
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "номер"
                    "field_cases" => array:6 [ …6]
                    "field_short_name" => ""
                  ]
                  #original: array:6 [
                    "id" => 26
                    "created_at" => "2026-02-28 22:16:36"
                    "updated_at" => null
                    "name" => "номер"
                    "field_cases" => array:6 [ …6]
                    "field_short_name" => ""
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #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
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1127
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1126
              #items: array:1 [
                0 => App\Models\Branch {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1167
              #items: array:4 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [
                    "id" => 1433207
                    "created_at" => "2026-02-28 22:16:36"
                     …21
                  ]
                  #original: array:23 [ …23]
                  #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 {#1186
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Branch {#1191
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #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 {#1129
              #items: array:2 [
                0 => App\Models\Element {#1157
                  #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 {#1156
                  #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" => "1433791"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433789"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1161
              #items: array:1 [
                0 => App\Models\Book {#1070}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1433790
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "151"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-5"
            "field_display_title" => "5"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1128}
            "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 {#1127}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1126}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1167}
            "content" => Illuminate\Database\Eloquent\Collection {#1129}
            "next" => array:2 [
              "refs" => "1433791"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433789"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1161}
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1164
          #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" => 1433791
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "151"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-6"
            "field_display_title" => "6"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1175
              #items: array:1 [
                0 => App\Models\Term {#1125}
              ]
              #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 {#1159
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1162
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1132
              #items: array:4 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
                2 => App\Models\Branch {#1186}
                3 => App\Models\Branch {#1191}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1133
              #items: array:2 [
                0 => App\Models\Element {#1141
                  #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
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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1139
                  #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" => "1433792"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433790"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1144
              #items: array:1 [
                0 => App\Models\Book {#1070}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1433791
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "151"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-6"
            "field_display_title" => "6"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1175}
            "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 {#1159}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1162}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1132}
            "content" => Illuminate\Database\Eloquent\Collection {#1133}
            "next" => array:2 [
              "refs" => "1433792"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433790"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1144}
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1148
          #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" => 1433792
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "151"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-7"
            "field_display_title" => "7"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1163
              #items: array:1 [
                0 => App\Models\Term {#1125}
              ]
              #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 {#1142
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1145
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1149
              #items: array:4 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
                2 => App\Models\Branch {#1186}
                3 => App\Models\Branch {#1191}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1147
              #items: array:2 [
                0 => App\Models\Element {#1172
                  #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 {#1170
                  #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" => "1433793"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433791"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1166
              #items: array:1 [
                0 => App\Models\Book {#1070}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1433792
            "created_at" => "2026-02-28 22:16:36"
            "updated_at" => null
            "field_page_start" => "151"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/18-7"
            "field_display_title" => "7"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1163}
            "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 {#1142}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1145}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1149}
            "content" => Illuminate\Database\Eloquent\Collection {#1147}
            "next" => array:2 [
              "refs" => "1433793"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1433791"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1166}
            "page" => array:2 [
              "refs" => "1434792"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #touches: []
          +timestamps: true
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:20 [
    "id" => 1434550
    "created_at" => "2026-02-28 22:16:36"
    "updated_at" => null
    "field_page_start" => "151"
    "field_url" => "/9-klass/fizika/gendenshtejn-uchebnik/page-1-151"
    "field_display_title" => "151"
    "field_folder" => "1"
    "field_image_name" => "151"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1072}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1104}
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "content" => Illuminate\Database\Eloquent\Collection {#1112}
    "next" => array:2 [
      "refs" => "1434551"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1434549"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1102}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 9 класс Учебник, авторы: Генденштейн Лев Элевич, Булатова Альбина Александрова, Корнильев Игорь Николаевич, Кошкина Анжелика Васильевна, издательство Бином, Москва, 2016, бирюзового цвета, Часть 1, страница 151
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