Страница 268 - гдз по физике 10-11 класс задачник Гельфгат, Генденштейн

Физика, 10-11 класс Задачник, авторы: Гельфгат Илья Маркович, Генденштейн Лев Элевич, Кирик Леонид Анатольевич, издательство Илекса, Москва, 2008, красного цвета

Авторы: Гельфгат И. М., Генденштейн Л. Э., Кирик Л. А.

Тип: Задачник

Издательство: Илекса

Год издания: 2008 - 2026

Уровень обучения: профильный

Цвет обложки: красный лупа, парень едет на велосипеде

ISBN: 978-5-89237-252-7

Cтраница 268

App\Models\BookPage {#1003 // resources/views/models/book_page/default.blade.php
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    "field_display_title" => "268"
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    "field_image_name" => "268"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008
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      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1016
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          #connection: "mysql"
          #table: "books"
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                0 => App\Models\Element {#4802
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                    0 => "*"
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            "tasks" => Illuminate\Database\Eloquent\Collection {#4882
              #items: array:2 [
                0 => App\Models\Task {#4890
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #attributes: array:24 [
                    "id" => 1319828
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_display_title" => "38.5"
                    "field_outside_task" => "0"
                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#4891 …2}
                    "field_metatags_title" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#4892 …2}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#4893 …2}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#5013 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#4968 …2}
                    "next" => array:2 [ …2]
                    "previous" => array:2 [ …2]
                    "book" => Illuminate\Database\Eloquent\Collection {#5009 …2}
                    "page" => array:2 [ …2]
                  ]
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                    "id" => 1319828
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                    0 => "*"
                  ]
                }
                1 => App\Models\Task {#5002
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1319829
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_page_start" => "267"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5021 …2}
                    "field_metatags_title" => null
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                    "breadcrumbs" => []
                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#5000 …2}
                    "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#5007 …2}
                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#5003 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#5010 …2}
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                    "book" => Illuminate\Database\Eloquent\Collection {#5006 …2}
                    "page" => array:2 [ …2]
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                  #original: array:24 [
                    "id" => 1319829
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#5021 …2}
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                    "edition_groups" => Illuminate\Database\Eloquent\Collection {#5000 …2}
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#5003 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#5010 …2}
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                  ]
                  #changes: []
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                    0 => "*"
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          #original: array:21 [
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4793}
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            "next" => array:2 [
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            "previous" => array:2 [
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            0 => "*"
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      ]
      #escapeWhenCastingToString: false
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    "tasks" => Illuminate\Database\Eloquent\Collection {#1009
      #items: array:3 [
        0 => App\Models\Task {#1056
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
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          #attributes: array:24 [
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            "updated_at" => null
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            "field_display_title" => "148"
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1067
              #items: array:1 [
                0 => App\Models\Term {#1059
                  #connection: "mysql"
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                  #keyType: "int"
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                  #attributes: array:6 [
                    "id" => 26
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "номер"
                    "field_cases" => array:6 [ …6]
                    "field_short_name" => ""
                  ]
                  #original: array:6 [
                    "id" => 26
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "номер"
                    "field_cases" => array:6 [ …6]
                    "field_short_name" => ""
                  ]
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                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
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            "field_metatags_title" => null
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1078
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                0 => App\Models\Branch {#1077
                  #connection: "mysql"
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                  #attributes: array:24 [
                    "id" => 1319339
                    "created_at" => "2026-04-10 13:58:26"
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                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1079 …2}
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                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1080 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1081 …2}
                  ]
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                    "id" => 1319339
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                    "field_branch_order" => null
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                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1079 …2}
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                    "book" => Illuminate\Database\Eloquent\Collection {#1080 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1081 …2}
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              ]
              #escapeWhenCastingToString: false
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            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1112
              #items: array:4 [
                0 => App\Models\Branch {#1122
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1319339
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1123 …2}
                    "field_page_start" => "163"
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                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
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                    "field_metatags_description" => null
                    "field_h1" => null
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                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1124 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1125 …2}
                  ]
                  #original: array:24 [
                    "id" => 1319339
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1123 …2}
                    "field_page_start" => "163"
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                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1124 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1125 …2}
                  ]
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                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                1 => App\Models\Branch {#1126
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1319371
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Электромагнитные колебания и волны"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1127 …2}
                    "field_page_start" => "241"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1128 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1129 …2}
                  ]
                  #original: array:24 [
                    "id" => 1319371
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Электромагнитные колебания и волны"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1127 …2}
                    "field_page_start" => "241"
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                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1128 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1129 …2}
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                2 => App\Models\Branch {#1130
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1319383
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "38. Элементы теории относительности"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1131 …2}
                    "field_page_start" => "265"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
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                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1132 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1141 …2}
                  ]
                  #original: array:24 [
                    "id" => 1319383
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "38. Элементы теории относительности"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1131 …2}
                    "field_page_start" => "265"
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                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1132 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1141 …2}
                  ]
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                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
                3 => App\Models\Branch {#1134
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1319385
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Олимпиадные задачи"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1133 …2}
                    "field_page_start" => "267"
                    "field_branch_display" => "0"
                    "field_branch_expanded" => "0"
                    "field_display_branch_in_title" => "1"
                    "field_display_task_interval" => "0"
                    "field_display_branch_page" => "1"
                    "field_branch_title_in_content" => "0"
                    "field_navigation_title" => null
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "field_branch_cover" => []
                    "field_branch_covers" => []
                    "book" => Illuminate\Database\Eloquent\Collection {#1137 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1150 …2}
                  ]
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                    "id" => 1319385
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "field_display_title" => "Олимпиадные задачи"
                    "field_branch_order" => null
                    "field_url" => null
                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1133 …2}
                    "field_page_start" => "267"
                    "field_branch_display" => "0"
                     …15
                  ]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1070
              #items: array:2 [
                0 => App\Models\Element {#1103
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
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                  +timestamps: true
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1101
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #attributes: array:6 [ …6]
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1319830"
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            ]
            "previous" => array:2 [
              "refs" => "1319828"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1106
              #items: array:1 [
                0 => App\Models\Book {#1015}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1341228"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1319829
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "267"
            "field_page_end" => "268"
            "field_url" => "/10-klass/fizika/gelfgat-zadachnik/olimp-148"
            "field_display_title" => "148"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1067}
            "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 {#1078}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1112}
            "content" => Illuminate\Database\Eloquent\Collection {#1070}
            "next" => array:2 [
              "refs" => "1319830"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1319828"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1106}
            "page" => array:2 [
              "refs" => "1341228"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #dateFormat: null
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1109
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1319830
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "268"
            "field_page_end" => null
            "field_url" => "/10-klass/fizika/gelfgat-zadachnik/olimp-149"
            "field_display_title" => "149"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1120
              #items: array:1 [
                0 => App\Models\Term {#1059}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1104
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1107
              #items: array:1 [
                0 => App\Models\Branch {#1122}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1068
              #items: array:4 [
                0 => App\Models\Branch {#1122}
                1 => App\Models\Branch {#1126}
                2 => App\Models\Branch {#1130}
                3 => App\Models\Branch {#1134}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1074
              #items: array:2 [
                0 => App\Models\Element {#1084
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
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                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1085
                  #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: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1319831"
              "type" => "task"
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            "previous" => array:2 [
              "refs" => "1319829"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1093
              #items: array:1 [
                0 => App\Models\Book {#1015}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1341229"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1319830
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_page_end" => null
            "field_url" => "/10-klass/fizika/gelfgat-zadachnik/olimp-149"
            "field_display_title" => "149"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1120}
            "field_metatags_title" => null
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            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1104}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1107}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1068}
            "content" => Illuminate\Database\Eloquent\Collection {#1074}
            "next" => array:2 [
              "refs" => "1319831"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1319829"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1093}
            "page" => array:2 [
              "refs" => "1341229"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1100
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1319831
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "268"
            "field_page_end" => "269"
            "field_url" => "/10-klass/fizika/gelfgat-zadachnik/olimp-150"
            "field_display_title" => "150"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1108
              #items: array:1 [
                0 => App\Models\Term {#1059}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1089
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1096
              #items: array:1 [
                0 => App\Models\Branch {#1122}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1098
              #items: array:4 [
                0 => App\Models\Branch {#1122}
                1 => App\Models\Branch {#1126}
                2 => App\Models\Branch {#1130}
                3 => App\Models\Branch {#1134}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1099
              #items: array:2 [
                0 => App\Models\Element {#1113
                  #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]
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1114
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1319832"
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            ]
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              "refs" => "1319830"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1117
              #items: array:1 [
                0 => App\Models\Book {#1015}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1341229"
              "type" => "book_page"
            ]
          ]
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            "id" => 1319831
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            "updated_at" => null
            "field_page_start" => "268"
            "field_page_end" => "269"
            "field_url" => "/10-klass/fizika/gelfgat-zadachnik/olimp-150"
            "field_display_title" => "150"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1108}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1089}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1096}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1098}
            "content" => Illuminate\Database\Eloquent\Collection {#1099}
            "next" => array:2 [
              "refs" => "1319832"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1319830"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1117}
            "page" => array:2 [
              "refs" => "1341229"
              "type" => "book_page"
            ]
          ]
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1341229
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "268"
    "field_url" => "/10-klass/fizika/gelfgat-zadachnik/page-268"
    "field_display_title" => "268"
    "field_folder" => "1"
    "field_image_name" => "268"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1016}
    "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 {#1007}
    "content" => Illuminate\Database\Eloquent\Collection {#1052}
    "next" => array:2 [
      "refs" => "1341230"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1341228"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1009}
  ]
  #changes: []
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  +timestamps: true
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  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 10-11 класс Задачник, авторы: Гельфгат Илья Маркович, Генденштейн Лев Элевич, Кирик Леонид Анатольевич, издательство Илекса, Москва, 2008, красного цвета, страница 268
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