Страница 230 - гдз по физике 8 класс учебник Громов, Родина

Физика, 8 класс Учебник, авторы: Громов Сергей Васильевич, Родина Надежда Александровна, Белага Виктория Владимировна, Ломаченков Иван Алексеевич, Панебратцев Юрий Анатольевич, издательство Просвещение, Москва, 2018

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: 2018 - 2026

Цвет обложки: синий

ISBN: 978-5-09-052825-2

Cтраница 230

App\Models\BookPage {#1003 // 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" => 1613303
    "created_at" => "2026-04-10 00:54:11"
    "updated_at" => null
    "field_page_start" => "230"
    "field_url" => "/8-klass/fizika/gromov-uchebnik/page-230"
    "field_display_title" => "230"
    "field_folder" => "1"
    "field_image_name" => "230"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008
      #items: []
      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1042
      #items: array:1 [
        0 => App\Models\Book {#1006
          #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" => 3654
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
            "field_pages_status" => null
            "field_subject" => Illuminate\Database\Eloquent\Collection {#1009
              #items: array:1 [
                0 => App\Models\Term {#1007
                  #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" => 6493
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Физика"
                    "field_abbreviated_name" => null
                    "field_cases" => array:6 [
                      "field_accusative_case" => "физику"
                      "field_creative_case" => "физикой"
                      "field_dative_case" => "физике"
                      "field_genitive_case" => "физики"
                      "field_nominative_case" => "физика"
                      "field_prepositional_case" => "физике"
                    ]
                    "field_foreign_lang_name" => null
                    "field_short_name" => null
                    "field_subject_type" => "technical_subject"
                    "field_translit" => "fizika"
                  ]
                  #original: array:10 [
                    "id" => 6493
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Физика"
                    "field_abbreviated_name" => null
                    "field_cases" => array:6 [
                      "field_accusative_case" => "физику"
                      "field_creative_case" => "физикой"
                      "field_dative_case" => "физике"
                      "field_genitive_case" => "физики"
                      "field_nominative_case" => "физика"
                      "field_prepositional_case" => "физике"
                    ]
                    "field_foreign_lang_name" => null
                    "field_short_name" => null
                    "field_subject_type" => "technical_subject"
                    "field_translit" => "fizika"
                  ]
                  #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_class" => Illuminate\Database\Eloquent\Collection {#1010
              #items: array:1 [
                0 => App\Models\Term {#1011
                  #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" => 5457
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "8"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "восьмой"
                      "field_creative_case" => "восьмым"
                      "field_dative_case" => "восьмому"
                      "field_genitive_case" => "восьмого"
                      "field_nominative_case" => "восьмой"
                      "field_prepositional_case" => "восьмом"
                    ]
                    "field_translit" => "vosmoj"
                  ]
                  #original: array:6 [
                    "id" => 5457
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "8"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "восьмой"
                      "field_creative_case" => "восьмым"
                      "field_dative_case" => "восьмому"
                      "field_genitive_case" => "восьмого"
                      "field_nominative_case" => "восьмой"
                      "field_prepositional_case" => "восьмом"
                    ]
                    "field_translit" => "vosmoj"
                  ]
                  #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_publisher" => Illuminate\Database\Eloquent\Collection {#1012
              #items: array:1 [
                0 => App\Models\Term {#1013
                  #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" => 5153
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Просвещение"
                    "field_cases" => null
                    "field_translit" => "prosveschenie"
                  ]
                  #original: array:6 [
                    "id" => 5153
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Просвещение"
                    "field_cases" => null
                    "field_translit" => "prosveschenie"
                  ]
                  #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_author" => Illuminate\Database\Eloquent\Collection {#1014
              #items: array:5 [
                0 => App\Models\Term {#1015
                  #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" => 4194
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Громов"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Сергей"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 4194
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Громов"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Сергей"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
                  ]
                  #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\Term {#1016
                  #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" => 5604
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Родина"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Надежда"
                    "field_patronymic" => "Александровна"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 5604
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Родина"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Надежда"
                    "field_patronymic" => "Александровна"
                    "field_surname_rp" => null
                  ]
                  #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\Term {#1017
                  #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" => 3824
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Белага"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Виктория"
                    "field_patronymic" => "Владимировна"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 3824
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Белага"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Виктория"
                    "field_patronymic" => "Владимировна"
                    "field_surname_rp" => null
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                3 => App\Models\Term {#1018
                  #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" => 5014
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Ломаченков"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Иван"
                    "field_patronymic" => "Алексеевич"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 5014
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Ломаченков"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Иван"
                    "field_patronymic" => "Алексеевич"
                    "field_surname_rp" => null
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                4 => App\Models\Term {#1019
                  #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" => 5412
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Панебратцев"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Юрий"
                    "field_patronymic" => "Анатольевич"
                    "field_surname_rp" => "Панебратцева"
                  ]
                  #original: array:12 [
                    "id" => 5412
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Панебратцев"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Юрий"
                    "field_patronymic" => "Анатольевич"
                    "field_surname_rp" => "Панебратцева"
                  ]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #touches: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1020
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1021
              #items: array:1 [
                0 => App\Models\Term {#1022
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [
                    "id" => 6671
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Учебник"
                    "field_book_type_foreign" => null
                    "field_cases" => array:6 [
                      "field_accusative_case" => "учебник"
                      "field_creative_case" => "учебником"
                      "field_dative_case" => "учебнику"
                      "field_genitive_case" => "учебника"
                      "field_nominative_case" => "учебник"
                      "field_prepositional_case" => "учебнике"
                    ]
                    "field_plural_form" => null
                    "field_short_name" => null
                    "field_short_name_foreign" => null
                    "field_translit" => "uchebnik"
                  ]
                  #original: array:10 [
                    "id" => 6671
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Учебник"
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                    "field_cases" => array:6 [
                      "field_accusative_case" => "учебник"
                      "field_creative_case" => "учебником"
                      "field_dative_case" => "учебнику"
                      "field_genitive_case" => "учебника"
                      "field_nominative_case" => "учебник"
                      "field_prepositional_case" => "учебнике"
                    ]
                    "field_plural_form" => null
                    "field_short_name" => null
                    "field_short_name_foreign" => null
                    "field_translit" => "uchebnik"
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #relations: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_country" => Illuminate\Database\Eloquent\Collection {#1023
              #items: array:1 [
                0 => App\Models\Term {#1024
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 9
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [
                      "field_accusative_case" => null
                      "field_creative_case" => null
                      "field_dative_case" => null
                      "field_genitive_case" => null
                      "field_nominative_case" => null
                      "field_prepositional_case" => null
                    ]
                    "field_translit" => "rossiya"
                  ]
                  #original: array:6 [
                    "id" => 9
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Россия"
                    "field_cases" => array:6 [
                      "field_accusative_case" => null
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                      "field_dative_case" => null
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                      "field_nominative_case" => null
                      "field_prepositional_case" => null
                    ]
                    "field_translit" => "rossiya"
                  ]
                  #changes: []
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                  #attributeCastCache: []
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                  #visible: []
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                  #guarded: array:1 [
                    0 => "*"
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              ]
              #escapeWhenCastingToString: false
            }
            "field_city" => Illuminate\Database\Eloquent\Collection {#1025
              #items: array:1 [
                0 => App\Models\Term {#1026
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [
                    "id" => 15
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Москва"
                    "field_cases" => array:6 [
                      "field_accusative_case" => null
                      "field_creative_case" => null
                      "field_dative_case" => null
                      "field_genitive_case" => null
                      "field_nominative_case" => null
                      "field_prepositional_case" => null
                    ]
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                    "field_solution_author" => "Автор"
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    "next" => Illuminate\Database\Eloquent\Collection {#6079
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        0 => App\Models\BookPage {#5858
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          #attributes: array:21 [
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            "field_display_title" => "231"
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            }
            "field_weight" => "0"
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              #items: array:1 [
                0 => App\Models\Book {#5854
                  #connection: "mysql"
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                        0 => App\Models\Term {#5868 …30}
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                        0 => App\Models\Term {#5871 …30}
                      ]
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                    }
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                        0 => App\Models\Term {#5872 …30}
                        1 => App\Models\Term {#5879 …30}
                        2 => App\Models\Term {#5880 …30}
                        3 => App\Models\Term {#5881 …30}
                        4 => App\Models\Term {#5882 …30}
                      ]
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                        0 => App\Models\Term {#5885 …30}
                      ]
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                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#5886
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                        0 => App\Models\Term {#5887 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#5888
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                        0 => App\Models\Term {#5889 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#5890
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                        0 => App\Models\Term {#5891 …30}
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                    }
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                    }
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                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#5894
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                        0 => App\Models\Term {#5895 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => null
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#5896
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#5897
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                        0 => App\Models\Term {#5882 …30}
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                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/fizika_08/gromov-u/covers/cover1.webp"
                        "alt" => ""
                         …2
                      ]
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                    ]
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                    "field_url" => "/8-klass/fizika/gromov-uchebnik"
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                    "created_at" => "2026-04-10 00:54:11"
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                    ]
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                    ]
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                0 => App\Models\Task {#5914
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5915
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#5917
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                      #escapeWhenCastingToString: false
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#5923
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                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#5979
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                      #escapeWhenCastingToString: false
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                    "next" => array:2 [
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                    "previous" => array:2 [
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                      "type" => "task"
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                    "book" => Illuminate\Database\Eloquent\Collection {#5990
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                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56opyt-1"
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                    0 => "*"
                  ]
                }
                1 => App\Models\Task {#5991
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5992
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                      #escapeWhenCastingToString: false
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#5994
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#5995
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#5996
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6005
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                      #escapeWhenCastingToString: false
                    }
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                    "book" => Illuminate\Database\Eloquent\Collection {#6010
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                      #escapeWhenCastingToString: false
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                    0 => "*"
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                }
                2 => App\Models\Task {#6011
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #attributes: array:24 [
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                    "created_at" => "2026-04-10 00:54:11"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6012
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6013
                      #items: []
                      #escapeWhenCastingToString: false
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6014
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6015
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6016
                      #items: array:2 [ …2]
                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
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                    ]
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                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6021
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                      #escapeWhenCastingToString: false
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                    "page" => array:2 [
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                  ]
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6012}
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6015}
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                    "book" => Illuminate\Database\Eloquent\Collection {#6021}
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                    0 => "*"
                  ]
                }
                3 => App\Models\Task {#6022
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1612791
                    "created_at" => "2026-04-10 00:54:11"
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                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-3"
                    "field_display_title" => "3"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6023
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
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                    "field_metatags_title" => null
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6025
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                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6026
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                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6027
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                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
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                    "book" => Illuminate\Database\Eloquent\Collection {#6032
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6024}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6025}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6026}
                    "content" => Illuminate\Database\Eloquent\Collection {#6027}
                    "next" => array:2 [
                      "refs" => "1612792"
                      "type" => "task"
                    ]
                    "previous" => array:2 [
                      "refs" => "1612790"
                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6032}
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
                    ]
                  ]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                4 => App\Models\Task {#6033
                  #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" => 1612792
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-4"
                    "field_display_title" => "4"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6034
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "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 {#6035
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6036
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6037
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6038
                      #items: array:2 [ …2]
                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
                      "refs" => "1612793"
                      "type" => "task"
                    ]
                    "previous" => array:2 [
                      "refs" => "1612791"
                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6043
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
                    ]
                  ]
                  #original: array:24 [
                    "id" => 1612792
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-4"
                    "field_display_title" => "4"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6034}
                    "field_metatags_title" => null
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6035}
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6037}
                    "content" => Illuminate\Database\Eloquent\Collection {#6038}
                    "next" => array:2 [
                      "refs" => "1612793"
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                    "previous" => array:2 [
                      "refs" => "1612791"
                      "type" => "task"
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                    "book" => Illuminate\Database\Eloquent\Collection {#6043}
                    "page" => array:2 [
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                      "type" => "book_page"
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                5 => App\Models\Task {#6044
                  #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" => 1612793
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-5"
                    "field_display_title" => "5"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6045
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_match" => null
                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6046
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6047
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6048
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6049
                      #items: array:2 [ …2]
                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
                      "refs" => "1612794"
                      "type" => "task"
                    ]
                    "previous" => array:2 [
                      "refs" => "1612792"
                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6054
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
                    ]
                  ]
                  #original: array:24 [
                    "id" => 1612793
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-5"
                    "field_display_title" => "5"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6045}
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6046}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6047}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6048}
                    "content" => Illuminate\Database\Eloquent\Collection {#6049}
                    "next" => array:2 [
                      "refs" => "1612794"
                      "type" => "task"
                    ]
                    "previous" => array:2 [
                      "refs" => "1612792"
                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6054}
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
                    ]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                6 => App\Models\Task {#6055
                  #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" => 1612794
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-6"
                    "field_display_title" => "6"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6056
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
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                    "field_description_bottom" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6057
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6058
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6059
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6060
                      #items: array:2 [ …2]
                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
                      "refs" => "1612795"
                      "type" => "task"
                    ]
                    "previous" => array:2 [
                      "refs" => "1612793"
                      "type" => "task"
                    ]
                    "book" => Illuminate\Database\Eloquent\Collection {#6065
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
                    ]
                  ]
                  #original: array:24 [
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                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "field_page_start" => "231"
                    "field_page_end" => null
                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-6"
                    "field_display_title" => "6"
                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6056}
                    "field_metatags_title" => null
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                    "field_h1" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#6057}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6058}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6059}
                    "content" => Illuminate\Database\Eloquent\Collection {#6060}
                    "next" => array:2 [
                      "refs" => "1612795"
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                    "previous" => array:2 [
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                      "type" => "task"
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                    "book" => Illuminate\Database\Eloquent\Collection {#6065}
                    "page" => array:2 [
                      "refs" => "1613304"
                      "type" => "book_page"
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #visible: []
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                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                7 => App\Models\Task {#6066
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1612795
                    "created_at" => "2026-04-10 00:54:11"
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                    "field_url" => "/8-klass/fizika/gromov-uchebnik/56vopr-7"
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                    "field_outside_task" => null
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6067
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
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                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#6069
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6070
                      #items: array:3 [ …3]
                      #escapeWhenCastingToString: false
                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#6071
                      #items: array:2 [ …2]
                      #escapeWhenCastingToString: false
                    }
                    "next" => array:2 [
                      "refs" => "1612796"
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                    "previous" => array:2 [
                      "refs" => "1612794"
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                    "book" => Illuminate\Database\Eloquent\Collection {#6076
                      #items: array:1 [ …1]
                      #escapeWhenCastingToString: false
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                    "page" => array:2 [
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              #escapeWhenCastingToString: false
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    "previous" => Illuminate\Database\Eloquent\Collection {#5864
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        0 => App\Models\BookPage {#5863
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            "content" => Illuminate\Database\Eloquent\Collection {#5877
              #items: array:1 [
                0 => App\Models\Element {#5876
                  #connection: "mysql"
                  #table: "elements"
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                    "id" => 1851013
                    "created_at" => "2026-04-10 00:54:11"
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                    "book_page" => array:2 [
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                    "img" => array:1 [
                      0 => array:5 [ …5]
                    ]
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                      0 => array:5 [ …5]
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            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5866}
            "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 {#5867}
            "content" => Illuminate\Database\Eloquent\Collection {#5877}
            "next" => array:2 [
              "refs" => "1613303"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1613301"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5869}
          ]
          #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 {#1043
      #items: []
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1613303
    "created_at" => "2026-04-10 00:54:11"
    "updated_at" => null
    "field_page_start" => "230"
    "field_url" => "/8-klass/fizika/gromov-uchebnik/page-230"
    "field_display_title" => "230"
    "field_folder" => "1"
    "field_image_name" => "230"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1042}
    "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 {#1040}
    "content" => Illuminate\Database\Eloquent\Collection {#1051}
    "next" => array:2 [
      "refs" => "1613304"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1613302"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1043}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 8 класс Учебник, авторы: Громов Сергей Васильевич, Родина Надежда Александровна, Белага Виктория Владимировна, Ломаченков Иван Алексеевич, Панебратцев Юрий Анатольевич, издательство Просвещение, Москва, 2018, страница 230
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