Страница 224 - 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 224

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" => 1437730
    "created_at" => "2026-04-08 17:28:58"
    "updated_at" => null
    "field_page_start" => "224"
    "field_url" => "/9-klass/fizika/grachev-uchebnik/page-224"
    "field_display_title" => "224"
    "field_folder" => "1"
    "field_image_name" => "224"
    "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" => "2026-04-08 17:28:58"
            "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
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                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
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                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [
                    "id" => 6493
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "Физика"
                    "field_abbreviated_name" => null
                    "field_cases" => array:6 [ …6]
                    "field_foreign_lang_name" => null
                    "field_short_name" => null
                    "field_subject_type" => "technical_subject"
                    "field_translit" => "fizika"
                  ]
                  #original: array:10 [
                    "id" => 6493
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "Физика"
                    "field_abbreviated_name" => null
                    "field_cases" => array:6 [ …6]
                    "field_foreign_lang_name" => null
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                    "field_subject_type" => "technical_subject"
                    "field_translit" => "fizika"
                  ]
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                    0 => "*"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_class" => Illuminate\Database\Eloquent\Collection {#1010
              #items: array:1 [
                0 => App\Models\Term {#1011
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
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                  #attributes: array:6 [
                    "id" => 5458
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "9"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "devjatyj"
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                  #original: array:6 [
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                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "9"
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                    "field_translit" => "devjatyj"
                  ]
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                }
              ]
              #escapeWhenCastingToString: false
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            "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: []
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                    "created_at" => "2026-04-08 17:28:58"
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                    "field_translit" => "ventana-graf"
                  ]
                  #original: array:6 [
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                    "field_translit" => "ventana-graf"
                  ]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author" => Illuminate\Database\Eloquent\Collection {#1014
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                0 => App\Models\Term {#1015
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                    "id" => 4180
                    "created_at" => "2026-04-08 17:28:58"
                    "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
                  ]
                  #original: array:12 [
                    "id" => 4180
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "Грачев"
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                    "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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                  #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" => "2026-04-08 17:28:58"
                    "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" => "2026-04-08 17:28:58"
                    "updated_at" => null
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                    "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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                  #dateFormat: null
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                    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" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "Боков"
                    "field_bio" => null
                    "field_degree_rp" => null
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                    "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" => "2026-04-08 17:28:58"
                    "updated_at" => 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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              ]
              #escapeWhenCastingToString: false
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            "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"
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                  #withCount: []
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                  #attributes: array:10 [
                    "id" => 6671
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "Учебник"
                    "field_book_type_foreign" => null
                    "field_cases" => array:6 [ …6]
                    "field_plural_form" => null
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                    "field_short_name_foreign" => null
                    "field_translit" => "uchebnik"
                  ]
                  #original: array:10 [
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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"
                  #primaryKey: "id"
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                    "created_at" => "2026-04-08 17:28:58"
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                    "field_translit" => "rossiya"
                  ]
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                    "updated_at" => null
                    "name" => "Россия"
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                    "field_translit" => "rossiya"
                  ]
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                0 => App\Models\Term {#1024
                  #connection: "mysql"
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            "field_series" => Illuminate\Database\Eloquent\Collection {#1025
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                0 => App\Models\Term {#1026
                  #connection: "mysql"
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            ]
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            }
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            }
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            }
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                0 => App\Models\Term {#1038
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                    "id" => 49
                    "created_at" => "2026-04-08 17:28:58"
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                    "name" => "синий"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "siniy"
                  ]
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                    "id" => 49
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "name" => "синий"
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                  ]
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            "id" => 1202
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            "field_subject" => Illuminate\Database\Eloquent\Collection {#1009}
            "field_class" => Illuminate\Database\Eloquent\Collection {#1010}
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            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1018}
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            "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1029}
            "field_publication_number" => "2"
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            "field_cover_description" => "изображено здание и радуга"
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            ]
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            "field_new_book" => Illuminate\Database\Eloquent\Collection {#1035}
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            "field_url" => "/9-klass/fizika/grachev-uchebnik"
            "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1037}
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            ]
          ]
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        0 => App\Models\Element {#1049
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          #attributes: array:6 [
            "id" => 1705726
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            "edition" => Illuminate\Database\Eloquent\Collection {#1059
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                0 => App\Models\Edition {#1051
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                  #attributes: array:21 [
                    "id" => 6112
                    "created_at" => "2026-04-08 17:28:58"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Автор"
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                    "field_process_formula" => "katex"
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                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 6112
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "title" => "Условие"
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                    "field_content_type" => "free"
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                  ]
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                }
              ]
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            "book_page" => array:2 [
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            "img" => array:1 [
              0 => array:5 [
                "name" => "224-1.jpg"
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                "width" => "614"
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                "path" => "/media/fizika_09/grachev-u/0-1/224-1.webp"
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          ]
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        }
      ]
      #escapeWhenCastingToString: false
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    "next" => Illuminate\Database\Eloquent\Collection {#5933
      #items: array:1 [
        0 => App\Models\BookPage {#5928
          #connection: "mysql"
          #table: "book_pages"
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          #keyType: "int"
          +incrementing: true
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          #attributes: array:21 [
            "id" => 1437731
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
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            "field_display_title" => "225"
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            "field_image_name" => "225"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5931
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              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5934
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                0 => App\Models\Book {#1006}
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            "content" => Illuminate\Database\Eloquent\Collection {#5948
              #items: array:1 [
                0 => App\Models\Element {#5947
                  #connection: "mysql"
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                  #attributes: array:6 [
                    "id" => 1705727
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                    "updated_at" => null
                    "edition" => Illuminate\Database\Eloquent\Collection {#5949 …2}
                    "book_page" => array:2 [ …2]
                    "img" => array:1 [ …1]
                  ]
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                    "edition" => Illuminate\Database\Eloquent\Collection {#5949 …2}
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              ]
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            "tasks" => Illuminate\Database\Eloquent\Collection {#5941
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                0 => App\Models\Task {#5961
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                  #attributes: array:24 [
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                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
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                    0 => "*"
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                1 => App\Models\Task {#5968
                  #connection: "mysql"
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                  #attributes: array:24 [
                    "id" => 1438350
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
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                    "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-4"
                    "field_display_title" => "4"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5966 …2}
                    "field_metatags_title" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#5975 …2}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#5971 …2}
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                    "page" => array:2 [ …2]
                  ]
                  #original: array:24 [
                    "id" => 1438350
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "field_page_start" => "225"
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                    "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-4"
                    "field_display_title" => "4"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5966 …2}
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                    0 => "*"
                  ]
                }
                2 => App\Models\Task {#5980
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #perPage: 15
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                  #attributes: array:24 [
                    "id" => 1438351
                    "created_at" => "2026-04-08 17:28:58"
                    "updated_at" => null
                    "field_page_start" => "225"
                    "field_page_end" => null
                    "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-5"
                    "field_display_title" => "5"
                    "field_outside_task" => null
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                3 => App\Models\Task {#5992
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                4 => App\Models\Task {#6004
                  #connection: "mysql"
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                5 => App\Models\Task {#6016
                  #connection: "mysql"
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                6 => App\Models\Task {#6028
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6020 …2}
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                7 => App\Models\Task {#6110
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6156 …2}
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                8 => App\Models\Task {#6140
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                    "field_display_title" => "3"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6115 …2}
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                     …2
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                }
                9 => App\Models\Task {#6128
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                  #guarded: array:1 [ …1]
                }
              ]
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            "tasks" => Illuminate\Database\Eloquent\Collection {#5941}
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    "previous" => Illuminate\Database\Eloquent\Collection {#5924
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        0 => App\Models\BookPage {#5923
          #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" => 1437729
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "223"
            "field_url" => "/9-klass/fizika/grachev-uchebnik/page-223"
            "field_display_title" => "223"
            "field_folder" => "1"
            "field_image_name" => "223"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5925
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5926
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#5927
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#5937
              #items: array:1 [
                0 => App\Models\Element {#5936
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1437728"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5929
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1437729
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "223"
            "field_url" => "/9-klass/fizika/grachev-uchebnik/page-223"
            "field_display_title" => "223"
            "field_folder" => "1"
            "field_image_name" => "223"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#5925}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#5926}
            "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 {#5927}
            "content" => Illuminate\Database\Eloquent\Collection {#5937}
            "next" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1437728"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#5929}
          ]
          #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: array:2 [
        0 => App\Models\Task {#1061
          #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" => 1438347
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "224"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-1"
            "field_display_title" => "1"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1065
              #items: array:1 [
                0 => App\Models\Term {#1062
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1064
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1104
              #items: array:1 [
                0 => App\Models\Branch {#1063
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1141
              #items: array:3 [
                0 => App\Models\Branch {#1151
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Branch {#1156
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Branch {#1161
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:23 [ …23]
                  #original: array:23 [ …23]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1102
              #items: array:2 [
                0 => App\Models\Element {#1133
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1132
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1438348"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1438346"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1136
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1438347
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "224"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-1"
            "field_display_title" => "1"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1065}
            "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 {#1064}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1104}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1141}
            "content" => Illuminate\Database\Eloquent\Collection {#1102}
            "next" => array:2 [
              "refs" => "1438348"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1438346"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1136}
            "page" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1139
          #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" => 1438348
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "224"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1148
              #items: array:1 [
                0 => App\Models\Term {#1062}
              ]
              #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 {#1134
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1137
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1106
              #items: array:3 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1156}
                2 => App\Models\Branch {#1161}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1107
              #items: array:2 [
                0 => App\Models\Element {#1116
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1112
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1438349"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1438347"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1118
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1438348
            "created_at" => "2026-04-08 17:28:58"
            "updated_at" => null
            "field_page_start" => "224"
            "field_page_end" => null
            "field_url" => "/9-klass/fizika/grachev-uchebnik/35vopr-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1148}
            "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 {#1134}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1137}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1106}
            "content" => Illuminate\Database\Eloquent\Collection {#1107}
            "next" => array:2 [
              "refs" => "1438349"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1438347"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1118}
            "page" => array:2 [
              "refs" => "1437730"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1437730
    "created_at" => "2026-04-08 17:28:58"
    "updated_at" => null
    "field_page_start" => "224"
    "field_url" => "/9-klass/fizika/grachev-uchebnik/page-224"
    "field_display_title" => "224"
    "field_folder" => "1"
    "field_image_name" => "224"
    "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" => "1437731"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1437729"
      "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, 9 класс Учебник, авторы: Грачев Александр Васильевич, Погожев Владимир Александрович, Боков Павел Юрьевич, издательство Вентана-граф, Москва, 2012, страница 224
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