Страница 120 - гдз по физике 9 класс учебник Грачев, Погожев

Физика, 9 класс Учебник, авторы: Грачев Александр Васильевич, Погожев Владимир Александрович, Боков Павел Юрьевич, издательство Вентана-граф, Москва, 2012

Авторы: Грачев А. В., Погожев В. А., Боков П. Ю.

Тип: Учебник

Серия: алгоритм успеха

Издательство: Вентана-граф

Год издания: 2012 - 2026

Цвет обложки: синий изображено здание и радуга

ISBN: 978-5-360-07412-0

Cтраница 120

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" => 1437626
    "created_at" => "2026-04-10 00:54:11"
    "updated_at" => null
    "field_page_start" => "120"
    "field_url" => "/9-klass/fizika/grachev-uchebnik/page-120"
    "field_display_title" => "120"
    "field_folder" => "1"
    "field_image_name" => "120"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008
      #items: []
      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1041
      #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" => 1202
            "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"
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                      "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" => 5458
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "9"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "девятый"
                      "field_creative_case" => "девятым"
                      "field_dative_case" => "девятому"
                      "field_genitive_case" => "девятого"
                      "field_nominative_case" => "девятый"
                      "field_prepositional_case" => "девятом"
                    ]
                    "field_translit" => "devjatyj"
                  ]
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                    "id" => 5458
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                    "updated_at" => null
                    "name" => "9"
                    "field_cases" => array:6 [
                      "field_accusative_case" => "девятый"
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                      "field_genitive_case" => "девятого"
                      "field_nominative_case" => "девятый"
                      "field_prepositional_case" => "девятом"
                    ]
                    "field_translit" => "devjatyj"
                  ]
                  #changes: []
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                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
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                  #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" => 5174
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Вентана-граф"
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                    "field_translit" => "ventana-graf"
                  ]
                  #original: array:6 [
                    "id" => 5174
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                    "updated_at" => null
                    "name" => "Вентана-граф"
                    "field_cases" => null
                    "field_translit" => "ventana-graf"
                  ]
                  #changes: []
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                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author" => Illuminate\Database\Eloquent\Collection {#1014
              #items: array:3 [
                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" => 4180
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Грачев"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Александр"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 4180
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Грачев"
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                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Александр"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                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" => 5484
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Погожев"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Владимир"
                    "field_patronymic" => "Александрович"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 5484
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Погожев"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Владимир"
                    "field_patronymic" => "Александрович"
                    "field_surname_rp" => null
                  ]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                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" => 3888
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Боков"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Павел"
                    "field_patronymic" => "Юрьевич"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 3888
                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
                    "name" => "Боков"
                    "field_bio" => null
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                    "field_foreign_lang_surname" => null
                    "field_name" => "Павел"
                    "field_patronymic" => "Юрьевич"
                    "field_surname_rp" => null
                  ]
                  #changes: []
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                  #dateFormat: null
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1018
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1019
              #items: array:1 [
                0 => App\Models\Term {#1020
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #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
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                    "field_translit" => "uchebnik"
                  ]
                  #original: array:10 [
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                    "field_cases" => array:6 [
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                      "field_prepositional_case" => "учебнике"
                    ]
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                    "field_translit" => "uchebnik"
                  ]
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                  ]
                }
              ]
              #escapeWhenCastingToString: false
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            "field_country" => Illuminate\Database\Eloquent\Collection {#1021
              #items: array:1 [
                0 => App\Models\Term {#1022
                  #connection: "mysql"
                  #table: "terms"
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                    "updated_at" => null
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                0 => App\Models\Term {#1024
                  #connection: "mysql"
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            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1028
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                  #connection: "mysql"
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                    "updated_at" => null
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                    "created_at" => "2026-04-10 00:54:11"
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                  ]
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                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
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            }
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            }
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            }
            "field_url" => "/9-klass/fizika/grachev-uchebnik"
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                0 => App\Models\Term {#1038
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                  #attributes: array:6 [
                    "id" => 49
                    "created_at" => "2026-04-10 00:54:11"
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                    ]
                    "field_translit" => "siniy"
                  ]
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                    "created_at" => "2026-04-10 00:54:11"
                    "updated_at" => null
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                    ]
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            "field_subject" => Illuminate\Database\Eloquent\Collection {#1009}
            "field_class" => Illuminate\Database\Eloquent\Collection {#1010}
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            "field_author" => Illuminate\Database\Eloquent\Collection {#1014}
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1018}
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1019}
            "field_country" => Illuminate\Database\Eloquent\Collection {#1021}
            "field_city" => Illuminate\Database\Eloquent\Collection {#1023}
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            "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1028}
            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1029}
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            "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1031}
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            "field_cover_description" => "изображено здание и радуга"
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            "field_part" => ""
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            "field_second_foreign_language" => null
            "field_for_whom" => "Учебник для учащихся общеобразовательных организаций"
            "field_allowed" => null
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            "field_tasks_count" => "580"
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            "field_default_folder" => "/fizika_09/grachev-u/"
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            "field_cover" => array:1 [
              0 => "/media/fizika_09/grachev-u/covers/cover1.webp"
            ]
            "field_cover_alts" => array:1 [
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            "field_covers" => array:1 [
              0 => array:4 [
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              ]
            ]
            "field_popular_book" => "0"
            "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1034}
            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1035}
            "field_old_book" => Illuminate\Database\Eloquent\Collection {#1036}
            "field_url" => "/9-klass/fizika/grachev-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1037}
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "breadcrumbs" => array:3 [
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        }
      ]
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      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1050
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        0 => App\Models\Element {#1049
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            "created_at" => "2026-04-10 00:54:11"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1059
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                0 => App\Models\Edition {#1051
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                  #keyType: "int"
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                  #attributes: array:21 [
                    "id" => 6112
                    "created_at" => "2026-04-10 00:54:11"
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                    "field_order" => "1"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1053
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                          #attributes: array:6 [ …6]
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                          #guarded: array:1 [ …1]
                        }
                      ]
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                    }
                    "field_content_type" => "free"
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                    "field_content_text_checked" => "0"
                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
                    "field_moderator" => "stas"
                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1054
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                    }
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                    }
                    "field_process_formula" => "katex"
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                    }
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                  ]
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                    "field_content_type" => "free"
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                    "field_solution_author" => "Автор"
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                    "field_edition_type" => "statement"
                    "field_root_dir" => "0-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1054}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1055}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1056}
                    "field_content_source" => null
                  ]
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "book_page" => array:2 [
              "refs" => "1437626"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "120-1.jpg"
                "alt" => null
                "width" => "614"
                "height" => 834
                "path" => "/media/fizika_09/grachev-u/0-1/120-1.webp?ts=1759503659"
              ]
            ]
          ]
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            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1059}
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              "refs" => "1437626"
              "type" => "book_page"
            ]
            "img" => array:1 [
              0 => array:5 [
                "name" => "120-1.jpg"
                "alt" => null
                "width" => "614"
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                "path" => "/media/fizika_09/grachev-u/0-1/120-1.webp?ts=1759503659"
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          ]
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "next" => Illuminate\Database\Eloquent\Collection {#4734
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        0 => App\Models\BookPage {#4571
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          +exists: true
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          #attributes: array:21 [
            "id" => 1437627
            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_page_start" => "121"
            "field_url" => "/9-klass/fizika/grachev-uchebnik/page-121"
            "field_display_title" => "121"
            "field_folder" => "1"
            "field_image_name" => "121"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4573
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4564
              #items: array:1 [
                0 => App\Models\Book {#4567
                  #connection: "mysql"
                  #table: "books"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:50 [
                    "id" => 1202
                    "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 {#4574
                      #items: array:1 [
                        0 => App\Models\Term {#4572
                          #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: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
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                          #relations: []
                          #touches: []
                          +timestamps: true
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [ …1]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_class" => Illuminate\Database\Eloquent\Collection {#4583
                      #items: array:1 [
                        0 => App\Models\Term {#4581
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [ …6]
                          #original: array:6 [ …6]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                           …12
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#4586
                      #items: array:1 [
                        0 => App\Models\Term {#4584 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author" => Illuminate\Database\Eloquent\Collection {#4587
                      #items: array:3 [
                        0 => App\Models\Term {#4585 …30}
                        1 => App\Models\Term {#4592 …30}
                        2 => App\Models\Term {#4593 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#4594
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#4595
                      #items: array:1 [
                        0 => App\Models\Term {#4596 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#4597
                      #items: array:1 [
                        0 => App\Models\Term {#4598 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#4599
                      #items: array:1 [
                        0 => App\Models\Term {#4600 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#4601
                      #items: array:1 [
                        0 => App\Models\Term {#4602 …30}
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#4603
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#4604
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#4605
                      #items: array:1 [
                        0 => App\Models\Term {#4606 …30}
                      ]
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4636
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                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
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                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#4654
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                        1 => App\Models\Element {#4657 …30}
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                    "book" => Illuminate\Database\Eloquent\Collection {#4665
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                }
                1 => App\Models\Task {#4666
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                        0 => App\Models\Branch {#4631 …30}
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4670
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                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
                      ]
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                    "content" => Illuminate\Database\Eloquent\Collection {#4671
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                        1 => App\Models\Element {#4674 …30}
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                    "book" => Illuminate\Database\Eloquent\Collection {#4676
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                    0 => "*"
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                2 => App\Models\Task {#4677
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                        0 => App\Models\Branch {#4631 …30}
                      ]
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4681
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                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
                      ]
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                    "content" => Illuminate\Database\Eloquent\Collection {#4682
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                        1 => App\Models\Element {#4685 …30}
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                    "book" => Illuminate\Database\Eloquent\Collection {#4687
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                    0 => "*"
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                }
                3 => App\Models\Task {#4688
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                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #perPage: 15
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1438194
                    "created_at" => "2026-04-10 00:54:11"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4689
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                        0 => App\Models\Branch {#4631 …30}
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4692
                      #items: array:3 [
                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
                      ]
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                    }
                    "content" => Illuminate\Database\Eloquent\Collection {#4693
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                        0 => App\Models\Element {#4694 …30}
                        1 => App\Models\Element {#4696 …30}
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                    }
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                    "previous" => array:2 [
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                    "book" => Illuminate\Database\Eloquent\Collection {#4698
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                    0 => "*"
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                }
                4 => App\Models\Task {#4699
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#4702
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                        0 => App\Models\Branch {#4631 …30}
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4703
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                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
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                    "content" => Illuminate\Database\Eloquent\Collection {#4704
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                        1 => App\Models\Element {#4707 …30}
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                    "book" => Illuminate\Database\Eloquent\Collection {#4709
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                        0 => App\Models\Book {#4567}
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                    0 => "*"
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                }
                5 => App\Models\Task {#4710
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #with: []
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4711
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                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#4713
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                        0 => App\Models\Branch {#4631 …30}
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4714
                      #items: array:3 [
                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
                        2 => App\Models\Branch {#4646 …30}
                      ]
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                    "content" => Illuminate\Database\Eloquent\Collection {#4715
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                    0 => "*"
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                6 => App\Models\Task {#4721
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                  #primaryKey: "id"
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                    }
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#4725
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                        0 => App\Models\Branch {#4631 …30}
                        1 => App\Models\Branch {#4637 …30}
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    "previous" => Illuminate\Database\Eloquent\Collection {#4577
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            "created_at" => "2026-04-10 00:54:11"
            "updated_at" => null
            "field_page_start" => "119"
            "field_url" => "/9-klass/fizika/grachev-uchebnik/page-119"
            "field_display_title" => "119"
            "field_folder" => "1"
            "field_image_name" => "119"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4578}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4579}
            "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 {#4580}
            "content" => Illuminate\Database\Eloquent\Collection {#4590}
            "next" => array:2 [
              "refs" => "1437626"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1437624"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4582}
          ]
          #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 {#1042
      #items: []
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1437626
    "created_at" => "2026-04-10 00:54:11"
    "updated_at" => null
    "field_page_start" => "120"
    "field_url" => "/9-klass/fizika/grachev-uchebnik/page-120"
    "field_display_title" => "120"
    "field_folder" => "1"
    "field_image_name" => "120"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1041}
    "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 {#1039}
    "content" => Illuminate\Database\Eloquent\Collection {#1050}
    "next" => array:2 [
      "refs" => "1437627"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1437625"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1042}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 9 класс Учебник, авторы: Грачев Александр Васильевич, Погожев Владимир Александрович, Боков Павел Юрьевич, издательство Вентана-граф, Москва, 2012, страница 120
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