Номер 2, страница 131 - 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

Глава 2. Динамика. Параграф 21. Солнечная система. Вопросы - номер 2, страница 131.

App\Models\Task {#1030 // resources/views/models/task/default.blade.php
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                            "updated_at" => null
                            "name" => "Вентана-граф"
                            "field_cases" => null
                            "field_translit" => "ventana-graf"
                          ]
                          #original: array:6 [
                            "id" => 5174
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Вентана-граф"
                            "field_cases" => null
                            "field_translit" => "ventana-graf"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1133
                      #items: array:3 [
                        0 => App\Models\Term {#1134
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 4180
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Грачев"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Александр"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 4180
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Грачев"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Александр"
                            "field_patronymic" => "Васильевич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        1 => App\Models\Term {#1135
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 5484
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Погожев"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Александрович"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 5484
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Погожев"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Владимир"
                            "field_patronymic" => "Александрович"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        2 => App\Models\Term {#1136
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 3888
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Боков"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Павел"
                            "field_patronymic" => "Юрьевич"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 3888
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Боков"
                            "field_bio" => null
                            "field_degree_rp" => null
                            "field_foreign_lang_name" => null
                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Павел"
                            "field_patronymic" => "Юрьевич"
                            "field_surname_rp" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1137
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1138
                      #items: array:1 [
                        0 => App\Models\Term {#1139
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #original: array:10 [
                            "id" => 6671
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Учебник"
                            "field_book_type_foreign" => null
                            "field_cases" => array:6 [ …6]
                            "field_plural_form" => null
                            "field_short_name" => null
                            "field_short_name_foreign" => null
                            "field_translit" => "uchebnik"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1140
                      #items: array:1 [
                        0 => App\Models\Term {#1141
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #original: array:6 [
                            "id" => 9
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "rossiya"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1142
                      #items: array:1 [
                        0 => App\Models\Term {#1143
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #original: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "moskva"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1144
                      #items: array:1 [
                        0 => App\Models\Term {#1145
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:8 [
                            "id" => 4697
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "алгоритм успеха"
                            "field_cases" => null
                            "field_foreign_lang_series" => null
                            "field_transcription_eng" => null
                            "field_translit" => "algoritm uspekha"
                          ]
                          #original: array:8 [
                            "id" => 4697
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "алгоритм успеха"
                            "field_cases" => null
                            "field_foreign_lang_series" => null
                            "field_transcription_eng" => null
                            "field_translit" => "algoritm uspekha"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1146
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1147
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1148
                      #items: array:1 [
                        0 => App\Models\Term {#1149
                          #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" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #original: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [ …6]
                            "field_color" => null
                            "field_end_year" => "2022"
                            "field_start_year" => "2019"
                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => "2"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1150
                      #items: array:1 [
                        0 => App\Models\Term {#1151
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 6900
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "доработанное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "dorabotannoe"
                          ]
                          #original: array:6 [
                            "id" => 6900
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "доработанное"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "dorabotannoe"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1152
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => "изображено здание и радуга"
                    "field_publication_year" => "2012"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебник для учащихся общеобразовательных организаций"
                    "field_allowed" => null
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "580"
                    "field_priority" => null
                    "field_default_folder" => "/fizika_09/grachev-u/"
                    "field_isbn" => "978-5-360-07412-0"
                    "field_cover" => array:1 [
                      0 => "/media/fizika_09/grachev-u/covers/cover1.webp?ts=1759082140"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/fizika_09/grachev-u/covers/cover1.webp?ts=1759082140"
                        "alt" => ""
                        "width" => "2294"
                        "height" => "3039"
                      ]
                    ]
                    "field_popular_book" => "0"
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1153
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1154
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1155
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/9-klass/fizika/grachev-uchebnik"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1156
                      #items: array:1 [
                        0 => App\Models\Term {#1157
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 49
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "синий"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "siniy"
                          ]
                          #original: array:6 [
                            "id" => 49
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "синий"
                            "field_cases" => array:6 [ …6]
                            "field_translit" => "siniy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
                          +timestamps: true
                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
                    "field_description_top" => null
                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 380
                      "subject" => 556
                      "class_subject" => 493
                    ]
                  ]
                  #original: array:50 [
                    "id" => 1202
                    "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 {#1128}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1129}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1131}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1133}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1137}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1138}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1140}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1142}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1144}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1146}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1147}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1148}
                    "field_publication_number" => "2"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1150}
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                    "field_cover_description" => "изображено здание и радуга"
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                    "field_default_folder" => "/fizika_09/grachev-u/"
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                      0 => "/media/fizika_09/grachev-u/covers/cover1.webp?ts=1759082140"
                    ]
                    "field_cover_alts" => array:1 [
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                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/fizika_09/grachev-u/covers/cover1.webp?ts=1759082140"
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                      ]
                    ]
                    "field_popular_book" => "0"
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1153}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1154}
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                    "field_url" => "/9-klass/fizika/grachev-uchebnik"
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                    "breadcrumbs" => array:3 [
                      "class" => 380
                      "subject" => 556
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                    0 => "*"
                  ]
                }
              ]
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            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1158
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            "id" => 1437905
            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "Динамика"
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            0 => "*"
          ]
        }
        1 => App\Models\Branch {#1159
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
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            "created_at" => "2026-04-10 13:58:26"
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            "field_branch_order" => "21"
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            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1164
              #items: array:1 [
                0 => App\Models\Term {#1161
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
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                  #attributes: array:7 [
                    "id" => 32
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_cases" => array:6 [ …6]
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                  ]
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                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "name" => "Параграф"
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                    "field_page_check_not_needed" => null
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                  ]
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                    0 => "*"
                  ]
                }
              ]
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            "field_page_start" => "128"
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            "book" => Illuminate\Database\Eloquent\Collection {#1163
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              ]
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            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1162
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                0 => App\Models\Branch {#1034}
              ]
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            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1164}
            "field_page_start" => "128"
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            "book" => Illuminate\Database\Eloquent\Collection {#1163}
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          ]
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            0 => "*"
          ]
        }
        2 => App\Models\Branch {#1165
          #connection: "mysql"
          #table: "branches"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1437928
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Вопросы"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1166
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_page_start" => "131"
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                0 => App\Models\Book {#1126}
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1176
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                0 => App\Models\Branch {#1175
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [
                    "id" => 1437927
                    "created_at" => "2026-04-10 13:58:26"
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                    "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1177 …2}
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                    "book" => Illuminate\Database\Eloquent\Collection {#1178 …2}
                    "branch_parent" => Illuminate\Database\Eloquent\Collection {#1179 …2}
                  ]
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                    0 => "*"
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          #original: array:24 [
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            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1166}
            "field_page_start" => "131"
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            "book" => Illuminate\Database\Eloquent\Collection {#1167}
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      ]
      #escapeWhenCastingToString: false
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    "content" => Illuminate\Database\Eloquent\Collection {#1099
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        0 => App\Models\Element {#1120
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          #attributes: array:7 [
            "id" => 1705099
            "created_at" => "2026-04-10 13:58:26"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1111
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                0 => App\Models\Edition {#1074
                  #connection: "mysql"
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                  #primaryKey: "id"
                  #keyType: "int"
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                  #with: []
                  #withCount: []
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                  #perPage: 15
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                  #attributes: array:21 [
                    "id" => 6112
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1078 …2}
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                    "field_edition_type" => "statement"
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                    "field_process_formula" => "katex"
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                  ]
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1078 …2}
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                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1108 …2}
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                  ]
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                    0 => "*"
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "1438208"
              "type" => "task"
            ]
            "text" => "<p><strong>2</strong> Перечислите планеты Солнечной системы. На какие группы их разделяют?</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "2-1.jpg"
                "alt" => null
                "width" => "490"
                "height" => 91
                "path" => "/media/fizika_09/grachev-u/0-21vopr/2-1.webp?ts=1759503132"
              ]
            ]
          ]
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1111}
            "task" => array:2 [
              "refs" => "1438208"
              "type" => "task"
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            "text" => "<p><strong>2</strong> Перечислите планеты Солнечной системы. На какие группы их разделяют?</p>"
            "img" => array:1 [
              0 => array:5 [
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                "alt" => null
                "width" => "490"
                "height" => 91
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              ]
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            0 => "*"
          ]
        }
        1 => App\Models\Element {#1107
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #attributes: array:6 [
            "id" => 1812783
            "created_at" => "2026-04-10 13:58:26"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1106
              #items: array:1 [
                0 => App\Models\Edition {#1105
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  #perPage: 15
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                  #attributes: array:21 [
                    "id" => 6644
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение"
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1103 …2}
                    "field_content_type" => "free"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Gemini 2.5 Pro"
                    "field_moderator" => "tolik"
                    "field_edition_type" => "solution"
                    "field_root_dir" => "1-"
                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1101 …2}
                    "field_comment" => null
                    "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1102 …2}
                    "field_process_formula" => "katex"
                    "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1100 …2}
                    "field_content_source" => null
                  ]
                  #original: array:21 [
                    "id" => 6644
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение"
                    "field_order" => "2"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1103 …2}
                    "field_content_type" => "free"
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            "text" => "<p>В Солнечную систему входят восемь планет, которые вращаются вокруг Солнца. В порядке их удаления от Солнца, это:</p><ul><li>Меркурий</li><li>Венера</li><li>Земля</li><li>Марс</li><li>Юпитер</li><li>Сатурн</li><li>Уран</li><li>Нептун</li></ul><p>Планеты Солнечной системы принято разделять на две основные группы, основываясь на их физических характеристиках (размер, масса, плотность, химический состав).</p><p><strong>1.</strong> Планеты земной группы (внутренние планеты)</p><p>К этой группе относятся четыре планеты, ближайшие к Солнцу. Их общие черты:</p><ul><li>Относительно небольшие размеры и масса.</li><li>Твердая, каменистая поверхность.</li><li>Высокая средняя плотность.</li><li>Состоят преимущественно из силикатов и металлического железа.</li><li>Имеют мало спутников или не имеют их совсем (у Земли — один, у Марса — два, у Меркурия и Венеры — нет).</li></ul><p>Планеты земной группы:</p><ul><li>Меркурий</li><li>Венера</li><li>Земля</li><li>Марс</li></ul><p><strong>2.</strong> Планеты-гиганты (внешние планеты)</p><p>К этой группе относятся четыре планеты, расположенные за поясом астероидов. Их общие черты:</p><ul><li>Значительно большие размеры и масса по сравнению с планетами земной группы.</li><li>Отсутствие твердой поверхности.</li><li>Низкая средняя плотность.</li><li>Состоят в основном из газов (водород, гелий) и льдов (вода, аммиак, метан).</li><li>У всех планет-гигантов есть системы колец и большое количество спутников.</li></ul><p>Планеты-гиганты, в свою очередь, делятся на две подгруппы:</p><ul><li><strong>Газовые гиганты:</strong> состоят преимущественно из водорода и гелия. К ним относятся <em>Юпитер</em> и <em>Сатурн</em>.</li><li><strong>Ледяные гиганты:</strong> в их атмосфере и недрах содержится большое количество воды, аммиака и метана в виде льда. К ним относятся <em>Уран</em> и <em>Нептун</em>.</li></ul><p><strong>Ответ:</strong> Планеты Солнечной системы: Меркурий, Венера, Земля, Марс, Юпитер, Сатурн, Уран, Нептун. Их разделяют на две основные группы: планеты земной группы (Меркурий, Венера, Земля, Марс) и планеты-гиганты (Юпитер, Сатурн, Уран, Нептун). Планеты-гиганты также делятся на газовые (Юпитер, Сатурн) и ледяные (Уран, Нептун).</p>"
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              "type" => "task"
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            "text" => "<p>В Солнечную систему входят восемь планет, которые вращаются вокруг Солнца. В порядке их удаления от Солнца, это:</p><ul><li>Меркурий</li><li>Венера</li><li>Земля</li><li>Марс</li><li>Юпитер</li><li>Сатурн</li><li>Уран</li><li>Нептун</li></ul><p>Планеты Солнечной системы принято разделять на две основные группы, основываясь на их физических характеристиках (размер, масса, плотность, химический состав).</p><p><strong>1.</strong> Планеты земной группы (внутренние планеты)</p><p>К этой группе относятся четыре планеты, ближайшие к Солнцу. Их общие черты:</p><ul><li>Относительно небольшие размеры и масса.</li><li>Твердая, каменистая поверхность.</li><li>Высокая средняя плотность.</li><li>Состоят преимущественно из силикатов и металлического железа.</li><li>Имеют мало спутников или не имеют их совсем (у Земли — один, у Марса — два, у Меркурия и Венеры — нет).</li></ul><p>Планеты земной группы:</p><ul><li>Меркурий</li><li>Венера</li><li>Земля</li><li>Марс</li></ul><p><strong>2.</strong> Планеты-гиганты (внешние планеты)</p><p>К этой группе относятся четыре планеты, расположенные за поясом астероидов. Их общие черты:</p><ul><li>Значительно большие размеры и масса по сравнению с планетами земной группы.</li><li>Отсутствие твердой поверхности.</li><li>Низкая средняя плотность.</li><li>Состоят в основном из газов (водород, гелий) и льдов (вода, аммиак, метан).</li><li>У всех планет-гигантов есть системы колец и большое количество спутников.</li></ul><p>Планеты-гиганты, в свою очередь, делятся на две подгруппы:</p><ul><li><strong>Газовые гиганты:</strong> состоят преимущественно из водорода и гелия. К ним относятся <em>Юпитер</em> и <em>Сатурн</em>.</li><li><strong>Ледяные гиганты:</strong> в их атмосфере и недрах содержится большое количество воды, аммиака и метана в виде льда. К ним относятся <em>Уран</em> и <em>Нептун</em>.</li></ul><p><strong>Ответ:</strong> Планеты Солнечной системы: Меркурий, Венера, Земля, Марс, Юпитер, Сатурн, Уран, Нептун. Их разделяют на две основные группы: планеты земной группы (Меркурий, Венера, Земля, Марс) и планеты-гиганты (Юпитер, Сатурн, Уран, Нептун). Планеты-гиганты также делятся на газовые (Юпитер, Сатурн) и ледяные (Уран, Нептун).</p>"
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№2 (с. 131)
Условие. №2 (с. 131)
скриншот условия
Физика, 9 класс Учебник, авторы: Грачев Александр Васильевич, Погожев Владимир Александрович, Боков Павел Юрьевич, издательство Вентана-граф, Москва, 2012, страница 131, номер 2, Условие

2 Перечислите планеты Солнечной системы. На какие группы их разделяют?

Решение. №2 (с. 131)

В Солнечную систему входят восемь планет, которые вращаются вокруг Солнца. В порядке их удаления от Солнца, это:

  • Меркурий
  • Венера
  • Земля
  • Марс
  • Юпитер
  • Сатурн
  • Уран
  • Нептун

Планеты Солнечной системы принято разделять на две основные группы, основываясь на их физических характеристиках (размер, масса, плотность, химический состав).

1. Планеты земной группы (внутренние планеты)

К этой группе относятся четыре планеты, ближайшие к Солнцу. Их общие черты:

  • Относительно небольшие размеры и масса.
  • Твердая, каменистая поверхность.
  • Высокая средняя плотность.
  • Состоят преимущественно из силикатов и металлического железа.
  • Имеют мало спутников или не имеют их совсем (у Земли — один, у Марса — два, у Меркурия и Венеры — нет).

Планеты земной группы:

  • Меркурий
  • Венера
  • Земля
  • Марс

2. Планеты-гиганты (внешние планеты)

К этой группе относятся четыре планеты, расположенные за поясом астероидов. Их общие черты:

  • Значительно большие размеры и масса по сравнению с планетами земной группы.
  • Отсутствие твердой поверхности.
  • Низкая средняя плотность.
  • Состоят в основном из газов (водород, гелий) и льдов (вода, аммиак, метан).
  • У всех планет-гигантов есть системы колец и большое количество спутников.

Планеты-гиганты, в свою очередь, делятся на две подгруппы:

  • Газовые гиганты: состоят преимущественно из водорода и гелия. К ним относятся Юпитер и Сатурн.
  • Ледяные гиганты: в их атмосфере и недрах содержится большое количество воды, аммиака и метана в виде льда. К ним относятся Уран и Нептун.

Ответ: Планеты Солнечной системы: Меркурий, Венера, Земля, Марс, Юпитер, Сатурн, Уран, Нептун. Их разделяют на две основные группы: планеты земной группы (Меркурий, Венера, Земля, Марс) и планеты-гиганты (Юпитер, Сатурн, Уран, Нептун). Планеты-гиганты также делятся на газовые (Юпитер, Сатурн) и ледяные (Уран, Нептун).

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