Страница 70 - гдз по физике 8 класс учебник Громов, Родина

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

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

Тип: Учебник

Серия: классический курс

Издательство: Просвещение

Год издания: 2018 - 2026

Цвет обложки: синий

ISBN: 978-5-09-052825-2

Cтраница 70

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" => 1613143
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "70"
    "field_url" => "/8-klass/fizika/gromov-uchebnik/page-70"
    "field_display_title" => "70"
    "field_folder" => "1"
    "field_image_name" => "70"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008
      #items: []
      #escapeWhenCastingToString: false
    }
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1042
      #items: array:1 [
        0 => App\Models\Book {#1006
          #connection: "mysql"
          #table: "books"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: false
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:50 [
            "id" => 3654
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
            "field_pages_status" => null
            "field_subject" => Illuminate\Database\Eloquent\Collection {#1009
              #items: array:1 [
                0 => App\Models\Term {#1007
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [
                    "id" => 6493
                    "created_at" => "2026-04-10 13:58:26"
                    "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" => "2026-04-10 13:58:26"
                    "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"
                  ]
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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
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                  #attributes: array:6 [
                    "id" => 5457
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "8"
                    "field_cases" => array:6 [ …6]
                    "field_translit" => "vosmoj"
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                  #original: array:6 [
                    "id" => 5457
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_translit" => "vosmoj"
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              ]
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            }
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1012
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                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #attributes: array:6 [
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                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Просвещение"
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                    "field_translit" => "prosveschenie"
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                  #original: array:6 [
                    "id" => 5153
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                  ]
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                    0 => "*"
                  ]
                }
              ]
              #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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                  +exists: true
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                  #attributes: array:12 [
                    "id" => 4194
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Громов"
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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" => "Сергей"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
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                  #original: array:12 [
                    "id" => 4194
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Сергей"
                    "field_patronymic" => "Васильевич"
                    "field_surname_rp" => null
                  ]
                  #changes: []
                  #casts: []
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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" => 5604
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Родина"
                    "field_bio" => null
                    "field_degree_rp" => null
                    "field_foreign_lang_name" => null
                    "field_foreign_lang_patronymic" => null
                    "field_foreign_lang_surname" => null
                    "field_name" => "Надежда"
                    "field_patronymic" => "Александровна"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 5604
                    "created_at" => "2026-04-10 13:58:26"
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                    "field_foreign_lang_surname" => null
                    "field_name" => "Надежда"
                    "field_patronymic" => "Александровна"
                    "field_surname_rp" => null
                  ]
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                }
                2 => App\Models\Term {#1017
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
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                  +preventsLazyLoading: false
                  #perPage: 15
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                  #attributes: array:12 [
                    "id" => 3824
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Белага"
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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" => "Виктория"
                    "field_patronymic" => "Владимировна"
                    "field_surname_rp" => null
                  ]
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                    "id" => 3824
                    "created_at" => "2026-04-10 13:58:26"
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                    "field_name" => "Виктория"
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                3 => App\Models\Term {#1018
                  #connection: "mysql"
                  #table: "terms"
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                    "created_at" => "2026-04-10 13:58:26"
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                    "field_foreign_lang_surname" => null
                    "field_name" => "Иван"
                    "field_patronymic" => "Алексеевич"
                    "field_surname_rp" => null
                  ]
                  #original: array:12 [
                    "id" => 5014
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                    "field_foreign_lang_surname" => null
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                  ]
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                }
                4 => App\Models\Term {#1019
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
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                    "created_at" => "2026-04-10 13:58:26"
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            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1020
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            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1021
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                0 => App\Models\Term {#1022
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            "field_country" => Illuminate\Database\Eloquent\Collection {#1023
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                1 => App\Models\Task {#6031
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                2 => App\Models\Task {#6023
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                3 => App\Models\Task {#6005
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6019 …2}
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6009 …2}
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                4 => App\Models\Task {#5995
                  #connection: "mysql"
                  #table: "tasks"
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                  #keyType: "int"
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                    "field_display_title" => "1"
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                    "field_task_type" => Illuminate\Database\Eloquent\Collection {#6006 …2}
                    "field_metatags_title" => null
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#6142 …2}
                    "content" => Illuminate\Database\Eloquent\Collection {#6098 …2}
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                    "book" => Illuminate\Database\Eloquent\Collection {#6133 …2}
                    "page" => array:2 [ …2]
                  ]
                  #original: array:24 [
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                    "created_at" => "2026-04-10 13:58:26"
                     …22
                  ]
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                }
                5 => App\Models\Task {#6135
                  #connection: "mysql"
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                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
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                  #perPage: 15
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #guarded: array:1 [ …1]
                }
                6 => App\Models\Task {#6128
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #guarded: array:1 [ …1]
                }
                7 => App\Models\Task {#6172
                  #connection: "mysql"
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                  #primaryKey: "id"
                  #keyType: "int"
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                }
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    "tasks" => Illuminate\Database\Eloquent\Collection {#1041
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Branch {#1160
                  #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 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Branch {#1165
                  #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 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1105
              #items: array:2 [
                0 => App\Models\Element {#1137
                  #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 {#1136
                  #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" => "1612426"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612424"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1140
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1613143"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1612425
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "70"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gromov-uchebnik/18vspom-1"
            "field_display_title" => "1"
            "field_outside_task" => null
            "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 {#1066}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1107}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1145}
            "content" => Illuminate\Database\Eloquent\Collection {#1105}
            "next" => array:2 [
              "refs" => "1612426"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612424"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1140}
            "page" => array:2 [
              "refs" => "1613143"
              "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 {#1143
          #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" => 1612426
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "70"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gromov-uchebnik/18vspom-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1152
              #items: array:1 [
                0 => App\Models\Term {#1064}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1138
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1141
              #items: array:1 [
                0 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1109
              #items: array:3 [
                0 => App\Models\Branch {#1155}
                1 => App\Models\Branch {#1160}
                2 => App\Models\Branch {#1165}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1110
              #items: array:2 [
                0 => App\Models\Element {#1120
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
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                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1118
                  #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" => "1612427"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612425"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1123
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1613143"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1612426
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "70"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gromov-uchebnik/18vspom-2"
            "field_display_title" => "2"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1152}
            "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 {#1138}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1141}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1109}
            "content" => Illuminate\Database\Eloquent\Collection {#1110}
            "next" => array:2 [
              "refs" => "1612427"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612425"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1123}
            "page" => array:2 [
              "refs" => "1613143"
              "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 => "*"
          ]
        }
        2 => App\Models\Task {#1128
          #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" => 1612427
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "70"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gromov-uchebnik/18vspom-3"
            "field_display_title" => "3"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1142
              #items: array:1 [
                0 => App\Models\Term {#1064}
              ]
              #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 {#1121
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1124
              #items: array:1 [
                0 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1129
              #items: array:3 [
                0 => App\Models\Branch {#1155}
                1 => App\Models\Branch {#1160}
                2 => App\Models\Branch {#1165}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1127
              #items: array:2 [
                0 => App\Models\Element {#1144
                  #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: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1153
                  #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: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1612428"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612426"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1108
              #items: array:1 [
                0 => App\Models\Book {#1006}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1613143"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1612427
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "70"
            "field_page_end" => null
            "field_url" => "/8-klass/fizika/gromov-uchebnik/18vspom-3"
            "field_display_title" => "3"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1142}
            "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 {#1121}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1124}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1129}
            "content" => Illuminate\Database\Eloquent\Collection {#1127}
            "next" => array:2 [
              "refs" => "1612428"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1612426"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1108}
            "page" => array:2 [
              "refs" => "1613143"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
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          #touches: []
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            0 => "*"
          ]
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      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1613143
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "70"
    "field_url" => "/8-klass/fizika/gromov-uchebnik/page-70"
    "field_display_title" => "70"
    "field_folder" => "1"
    "field_image_name" => "70"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1008}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1042}
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
    "field_description_bottom" => null
    "edition_groups" => Illuminate\Database\Eloquent\Collection {#1040}
    "content" => Illuminate\Database\Eloquent\Collection {#1051}
    "next" => array:2 [
      "refs" => "1613144"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1613142"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1041}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Физика, 8 класс Учебник, авторы: Громов Сергей Васильевич, Родина Надежда Александровна, Белага Виктория Владимировна, Ломаченков Иван Алексеевич, Панебратцев Юрий Анатольевич, издательство Просвещение, Москва, 2018, страница 70
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