Страница 209 - гдз по физике 7 класс учебник Громов, Родина

Физика, 7 класс Учебник, авторы: Громов Сергей Васильевич, Родина Надежда Александровна, Белага Виктория Владимировна, Ломаченков Иван Алексеевич, Панебратцев Юрий Анатольевич, издательство Просвещение, Москва, 2019

Авторы: Громов С. В., Родина Н. А., Белага В. В., Ломаченков И. А., Панебратцев Ю. А.

Тип: Учебник

Серия: классический курс

Издательство: Просвещение

Год издания: 2019 - 2026

Цвет обложки: синий

ISBN: 978-5-09-081005-0

Cтраница 209

App\Models\BookPage {#1030 // resources/views/models/book_page/default.blade.php
  #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" => 1703964
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "209"
    "field_url" => "/7-klass/fizika/gromov-uchebnik/page-209"
    "field_display_title" => "209"
    "field_folder" => "1"
    "field_image_name" => "209"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1036
      #items: []
      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1044
      #items: array:1 [
        0 => App\Models\Book {#1043
          #connection: "mysql"
          #table: "books"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: false
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:50 [
            "id" => 3653
            "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 {#1048
              #items: array:1 [
                0 => App\Models\Term {#1045
                  #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 [ …10]
                  #original: array:10 [ …10]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_class" => Illuminate\Database\Eloquent\Collection {#1050
              #items: array:1 [
                0 => App\Models\Term {#1047
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
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                  +preventsLazyLoading: false
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                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1052
              #items: array:1 [
                0 => App\Models\Term {#1049
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author" => Illuminate\Database\Eloquent\Collection {#1053
              #items: array:5 [
                0 => App\Models\Term {#1065
                  #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 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Term {#1068
                  #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 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Term {#1064
                  #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 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Term {#1066
                  #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 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                4 => 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:12 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1062
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1059
              #items: array:1 [
                0 => App\Models\Term {#1046
                  #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 [ …10]
                  #original: array:10 [ …10]
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                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #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
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                  #original: array:6 [ …6]
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_city" => Illuminate\Database\Eloquent\Collection {#1054
              #items: array:1 [
                0 => App\Models\Term {#1058
                  #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: []
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                  #dateFormat: null
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                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_series" => Illuminate\Database\Eloquent\Collection {#1055
              #items: array:1 [
                0 => App\Models\Term {#1056
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #escapeWhenCastingToString: false
                  #attributes: array:8 [ …8]
                  #original: array:8 [ …8]
                  #changes: []
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1057
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1051
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1072
              #items: array:1 [
                0 => App\Models\Term {#1069
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
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                  #attributes: array:10 [ …10]
                  #original: array:10 [ …10]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publication_number" => "2"
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1071
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1070
              #items: array:1 [
                0 => App\Models\Term {#1067}
              ]
              #escapeWhenCastingToString: false
            }
            "field_under_the_edition_degree" => null
            "field_cover_description" => null
            "field_publication_year" => "2019"
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            "field_part" => ""
            "field_part_writing" => ""
            "field_second_foreign_language" => null
            "field_for_whom" => "Учебник для общеобразовательных организаций"
            "field_allowed" => null
            "field_reserve_field" => null
            "field_link_to_source" => null
            "field_tasks_count" => "665"
            "field_priority" => null
            "field_default_folder" => "/fizika_07/gromov-u/"
            "field_isbn" => "978-5-09-081005-0"
            "field_cover" => array:1 [
              0 => "/media/fizika_07/gromov-u/covers/cover1.webp?ts=1763287955"
            ]
            "field_cover_alts" => array:1 [
              0 => ""
            ]
            "field_covers" => array:1 [
              0 => array:4 [
                "path" => "/media/fizika_07/gromov-u/covers/cover1.webp?ts=1763287955"
                "alt" => ""
                "width" => "1887"
                "height" => "2484"
              ]
            ]
            "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" => "/7-klass/fizika/gromov-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079
              #items: array:1 [
                0 => App\Models\Term {#1076
                  #connection: "mysql"
                  #table: "terms"
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                }
              ]
              #escapeWhenCastingToString: false
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            "field_metatags_title" => null
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            "breadcrumbs" => array:3 [
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              "class_subject" => 491
            ]
          ]
          #original: array:50 [
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            "field_subject" => Illuminate\Database\Eloquent\Collection {#1048}
            "field_class" => Illuminate\Database\Eloquent\Collection {#1050}
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1052}
            "field_author" => Illuminate\Database\Eloquent\Collection {#1053}
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1062}
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1059}
            "field_country" => Illuminate\Database\Eloquent\Collection {#1060}
            "field_city" => Illuminate\Database\Eloquent\Collection {#1054}
            "field_series" => Illuminate\Database\Eloquent\Collection {#1055}
            "field_umk" => Illuminate\Database\Eloquent\Collection {#1057}
            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1051}
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1072}
            "field_publication_number" => "2"
            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1071}
            "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1070}
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            "field_cover_description" => null
            "field_publication_year" => "2019"
            "field_publication_year_until" => null
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            "field_url" => "/7-klass/fizika/gromov-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079}
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    "content" => Illuminate\Database\Eloquent\Collection {#1081
      #items: array:1 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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                0 => App\Models\Edition {#1082
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                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
                  #original: array:21 [ …21]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "book_page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "209-1.jpg"
                "alt" => null
                "width" => "1929"
                "height" => 2542
                "path" => "/media/fizika_07/gromov-u/0-1/209-1.webp?ts=1763581843"
              ]
            ]
          ]
          #original: array:6 [
            "id" => 1854878
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1090}
            "book_page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "209-1.jpg"
                "alt" => null
                "width" => "1929"
                "height" => 2542
                "path" => "/media/fizika_07/gromov-u/0-1/209-1.webp?ts=1763581843"
              ]
            ]
          ]
          #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 {#4817
      #items: array:1 [
        0 => App\Models\BookPage {#4816
          #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" => 1703965
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_url" => "/7-klass/fizika/gromov-uchebnik/page-210"
            "field_display_title" => "210"
            "field_folder" => "1"
            "field_image_name" => "210"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4831
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4830
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #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 {#4828
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4904
              #items: array:1 [
                0 => App\Models\Element {#4908
                  #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" => "1703966"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4827
              #items: array:13 [
                0 => App\Models\Task {#4925
                  #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]
                }
                1 => App\Models\Task {#4932
                  #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]
                }
                2 => App\Models\Task {#4944
                  #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]
                }
                3 => App\Models\Task {#4956
                  #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]
                }
                4 => App\Models\Task {#4968
                  #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]
                }
                5 => App\Models\Task {#4980
                  #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]
                }
                6 => App\Models\Task {#4992
                  #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]
                }
                7 => App\Models\Task {#5004
                  #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]
                }
                8 => App\Models\Task {#5016
                  #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]
                }
                9 => App\Models\Task {#5028
                  #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]
                }
                10 => App\Models\Task {#5040
                  #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]
                }
                11 => App\Models\Task {#5052
                  #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]
                }
                12 => App\Models\Task {#5064
                  #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
                   …4
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1703965
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_url" => "/7-klass/fizika/gromov-uchebnik/page-210"
            "field_display_title" => "210"
            "field_folder" => "1"
            "field_image_name" => "210"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4831}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4830}
            "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 {#4828}
            "content" => Illuminate\Database\Eloquent\Collection {#4904}
            "next" => array:2 [
              "refs" => "1703966"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4827}
          ]
          #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 {#4812
      #items: array:1 [
        0 => App\Models\BookPage {#4811
          #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" => 1703963
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "208"
            "field_url" => "/7-klass/fizika/gromov-uchebnik/page-208"
            "field_display_title" => "208"
            "field_folder" => "1"
            "field_image_name" => "208"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4813
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4814
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #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 {#4815
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4825
              #items: array:1 [
                0 => App\Models\Element {#4824 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1703962"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4818
              #items: array:6 [
                0 => App\Models\Task {#4834 …30}
                1 => App\Models\Task {#4841 …30}
                2 => App\Models\Task {#4853 …30}
                3 => App\Models\Task {#4865 …30}
                4 => App\Models\Task {#4877 …30}
                5 => App\Models\Task {#4889 …30}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1703963
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "208"
            "field_url" => "/7-klass/fizika/gromov-uchebnik/page-208"
            "field_display_title" => "208"
            "field_folder" => "1"
            "field_image_name" => "208"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4813}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4814}
            "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 {#4815}
            "content" => Illuminate\Database\Eloquent\Collection {#4825}
            "next" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1703962"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4818}
          ]
          #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 {#1040
      #items: array:10 [
        0 => App\Models\Task {#1100
          #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" => 1704771
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-83"
            "field_display_title" => "83"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1104
              #items: array:1 [
                0 => App\Models\Term {#1101 …30}
              ]
              #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 {#1103
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1113
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1105
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1102
              #items: array:2 [
                0 => App\Models\Element {#1121 …30}
                1 => App\Models\Element {#1123 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1118
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1104}
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        1 => App\Models\Task {#1109
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
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                0 => App\Models\Branch {#1112 …30}
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            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1107
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            "content" => Illuminate\Database\Eloquent\Collection {#1110
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                1 => App\Models\Element {#1141 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1136
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        2 => App\Models\Task {#1130
          #connection: "mysql"
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1117
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            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1131
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            "content" => Illuminate\Database\Eloquent\Collection {#1133
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                1 => App\Models\Element {#1153 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1148
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        3 => App\Models\Task {#1143
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1146
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1144
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            "content" => Illuminate\Database\Eloquent\Collection {#1145
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                1 => App\Models\Element {#1165 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1160
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        4 => App\Models\Task {#1155
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1158
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                0 => App\Models\Branch {#1112 …30}
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            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1156
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              ]
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            "content" => Illuminate\Database\Eloquent\Collection {#1157
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                1 => App\Models\Element {#1177 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1172
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            0 => "*"
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        5 => App\Models\Task {#1167
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1159
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              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
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            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1168
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                0 => App\Models\Branch {#1112 …30}
              ]
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            "content" => Illuminate\Database\Eloquent\Collection {#1169
              #items: array:2 [
                0 => App\Models\Element {#1187 …30}
                1 => App\Models\Element {#1189 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1184
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              "type" => "task"
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            "book" => Illuminate\Database\Eloquent\Collection {#1184}
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        6 => App\Models\Task {#1179
          #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" => 1704777
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-89"
            "field_display_title" => "89"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1171
              #items: array:1 [
                0 => App\Models\Term {#1101 …30}
              ]
              #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 {#1186
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1182
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1180
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1181
              #items: array:2 [
                0 => App\Models\Element {#1199 …30}
                1 => App\Models\Element {#1201 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1704778"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704776"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1196
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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            "id" => 1704777
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-89"
            "field_display_title" => "89"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1171}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1186}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1182}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1180}
            "content" => Illuminate\Database\Eloquent\Collection {#1181}
            "next" => array:2 [
              "refs" => "1704778"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704776"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1196}
            "page" => array:2 [
              "refs" => "1703964"
              "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 => "*"
          ]
        }
        7 => App\Models\Task {#1191
          #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" => 1704778
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-90"
            "field_display_title" => "90"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1183
              #items: array:1 [
                0 => App\Models\Term {#1101 …30}
              ]
              #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 {#1198
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1194
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1192
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1193
              #items: array:2 [
                0 => App\Models\Element {#1211 …30}
                1 => App\Models\Element {#1213 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1704779"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704777"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1208
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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            "id" => 1704778
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-90"
            "field_display_title" => "90"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1183}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1198}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1194}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1192}
            "content" => Illuminate\Database\Eloquent\Collection {#1193}
            "next" => array:2 [
              "refs" => "1704779"
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            "previous" => array:2 [
              "refs" => "1704777"
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            "book" => Illuminate\Database\Eloquent\Collection {#1208}
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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          #attributeCastCache: []
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            0 => "*"
          ]
        }
        8 => App\Models\Task {#1203
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1704779
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-91"
            "field_display_title" => "91"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1195
              #items: array:1 [
                0 => App\Models\Term {#1101 …30}
              ]
              #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 {#1210
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1206
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1204
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1205
              #items: array:2 [
                0 => App\Models\Element {#1223 …30}
                1 => App\Models\Element {#1225 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1704780"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704778"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1220
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1704779
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-91"
            "field_display_title" => "91"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1195}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1210}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1206}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1204}
            "content" => Illuminate\Database\Eloquent\Collection {#1205}
            "next" => array:2 [
              "refs" => "1704780"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704778"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1220}
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
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          #touches: []
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          #visible: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        9 => App\Models\Task {#1215
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #escapeWhenCastingToString: false
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            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-92"
            "field_display_title" => "92"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1207
              #items: array:1 [
                0 => App\Models\Term {#1101 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1222
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1218
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1216
              #items: array:1 [
                0 => App\Models\Branch {#1112 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1217
              #items: array:2 [
                0 => App\Models\Element {#1235 …30}
                1 => App\Models\Element {#1237 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1704781"
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            ]
            "previous" => array:2 [
              "refs" => "1704779"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1232
              #items: array:1 [
                0 => App\Models\Book {#1043}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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            "id" => 1704780
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            "field_page_end" => null
            "field_url" => "/7-klass/fizika/gromov-uchebnik/upr-92"
            "field_display_title" => "92"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1207}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
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            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1222}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1218}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1216}
            "content" => Illuminate\Database\Eloquent\Collection {#1217}
            "next" => array:2 [
              "refs" => "1704781"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1704779"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1232}
            "page" => array:2 [
              "refs" => "1703964"
              "type" => "book_page"
            ]
          ]
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
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            0 => "*"
          ]
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      ]
      #escapeWhenCastingToString: false
    }
  ]
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    "id" => 1703964
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "209"
    "field_url" => "/7-klass/fizika/gromov-uchebnik/page-209"
    "field_display_title" => "209"
    "field_folder" => "1"
    "field_image_name" => "209"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1036}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1044}
    "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 {#1035}
    "content" => Illuminate\Database\Eloquent\Collection {#1081}
    "next" => array:2 [
      "refs" => "1703965"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1703963"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1040}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
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  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
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  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 7 класс Учебник, авторы: Громов Сергей Васильевич, Родина Надежда Александровна, Белага Виктория Владимировна, Ломаченков Иван Алексеевич, Панебратцев Юрий Анатольевич, издательство Просвещение, Москва, 2019, страница 209
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