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Номер 75.6, страница 253 - гдз по физике 7-9 класс сборник задач Лукашик, Иванова
Авторы: Лукашик В. И., Иванова Е. В.
Тип: Сборник задач
Издательство: Просвещение
Год издания: 2021 - 2026
Цвет обложки: голубой
ISBN: 978-5-09-090938-9
Популярные ГДЗ в 7 классе
Глава 10. Квантовые явления. Параграф 75. Элементарные частицы. Взаимосвязь энергии и массы - номер 75.6, страница 253.
App\Models\Task {#1030 // resources/views/models/task/default.blade.php #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" => 580639 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-6" "field_display_title" => "75.6" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037 #items: array:1 [ 0 => App\Models\Term {#1036 #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" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #original: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #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 "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1046 #items: array:1 [ 0 => App\Models\Branch {#1045 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 578441 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Квантовые явления" "field_branch_order" => "10" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1050 #items: array:1 [ 0 => App\Models\Term {#1047 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #original: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => 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_page_start" => "245" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1083 #items: array:1 [ 0 => App\Models\Book {#1049 #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" => 95 "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 {#1051 #items: array:1 [ 0 => App\Models\Term {#1048 #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" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1052 #items: array:3 [ 0 => App\Models\Term {#1053 #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" => 5456 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "7" "field_cases" => array:6 [ …6] "field_translit" => "sedmoj" ] #original: array:6 [ "id" => 5456 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "7" "field_cases" => array:6 [ …6] "field_translit" => "sedmoj" ] #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 {#1054 #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" => 5457 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "8" "field_cases" => array:6 [ …6] "field_translit" => "vosmoj" ] #original: 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" ] #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 {#1055 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 5458 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "9" "field_cases" => array:6 [ …6] "field_translit" => "devjatyj" ] #original: array:6 [ "id" => 5458 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "9" "field_cases" => array:6 [ …6] "field_translit" => "devjatyj" ] #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_publisher" => Illuminate\Database\Eloquent\Collection {#1056 #items: array:1 [ 0 => App\Models\Term {#1057 #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" => 5153 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Просвещение" "field_cases" => null "field_translit" => "prosveschenie" ] #original: array:6 [ "id" => 5153 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Просвещение" "field_cases" => null "field_translit" => "prosveschenie" ] #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 {#1058 #items: array:2 [ 0 => App\Models\Term {#1059 #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" => 5023 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Лукашик" "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" => "Иванович" "field_surname_rp" => null ] #original: array:12 [ "id" => 5023 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Лукашик" "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" => "Иванович" "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 {#1060 #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" => 4476 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Иванова" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Елена" "field_patronymic" => "Владимировна" "field_surname_rp" => null ] #original: array:12 [ "id" => 4476 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Иванова" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Елена" "field_patronymic" => "Владимировна" "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 {#1061 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1062 #items: array:1 [ 0 => App\Models\Term {#1063 #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" => 6598 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Сборник задач" "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" => "sbornik zadach" ] #original: array:10 [ "id" => 6598 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Сборник задач" "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" => "sbornik zadach" ] #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 {#1064 #items: array:1 [ 0 => App\Models\Term {#1065 #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 {#1066 #items: array:1 [ 0 => App\Models\Term {#1067 #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 {#1068 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1069 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1070 #items: [] #escapeWhenCastingToString: false } "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1071 #items: array:1 [ 0 => App\Models\Term {#1072 #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" => 25 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "ФГОС (новый)" "field_cases" => array:6 [ …6] "field_color" => "красный" "field_end_year" => "2027" "field_start_year" => "2023" "field_translit" => "fgos" "field_type" => "новый" ] #original: array:10 [ "id" => 25 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "ФГОС (новый)" "field_cases" => array:6 [ …6] "field_color" => "красный" "field_end_year" => "2027" "field_start_year" => "2023" "field_translit" => "fgos" "field_type" => "новый" ] #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" => "37" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1073 #items: array:1 [ 0 => App\Models\Term {#1074 #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" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #original: array:6 [ "id" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #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 {#1075 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => null "field_publication_year" => "2021" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебное пособие" "field_allowed" => null "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "2202" "field_priority" => "6" "field_default_folder" => "/fizika_07/lukashik7-9sz22/" "field_isbn" => "978-5-09-090938-9" "field_cover" => array:1 [ 0 => "/media/fizika_07/lukashik7-9sz22/covers/cover1.webp?ts=1737912007" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/fizika_07/lukashik7-9sz22/covers/cover1.webp?ts=1737912007" "alt" => "" "width" => "1350" "height" => "1772" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1076 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1077 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1078 #items: [] #escapeWhenCastingToString: false } "field_url" => "/7-klass/fizika/lukashik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079 #items: array:1 [ 0 => App\Models\Term {#1080 #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" => 52 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "голубой" "field_cases" => array:6 [ …6] "field_translit" => "goluboy" ] #original: array:6 [ "id" => 52 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "голубой" "field_cases" => array:6 [ …6] "field_translit" => "goluboy" ] #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" => "<!--Текст в низу страницы--> <h2> Как хорошо усвоить физику? </h2> <p> Каждый предмет требует от ребят предельного внимания, так как легко допустить ошибку, которая сведет на нет все ранее потраченные усилия. Физика в этом плане не стала исключение. Кому-то из учеников данная наука дается легко, а некоторые не могут понять даже элементарные вещи. Но порой и отличникам требуется помощь, чтобы лучше разобрать параграф или убедиться в своей правоте. Поэтому работа с <strong>ГДЗ к сборнику задач по физике 7-9 класс Лукашик, Иванова (Просвещение, 2021-2023 гг.)</strong> будет полезна всем детям. </p> <p> Школьникам предстоит изучить следующие непростые темы: </p> <ol> <li>Физические тела. Физические явления.</li> <li>Механическое движение и его относительность. Траектория. Путь. Перемещение.</li> <li>Взаимодействие тел. Масса тел.</li> <li>Сложение и разложение сил.</li> <li>Давление твёрдых тел, жидкостей и газов.</li> <li>Работа и мощность. Простые механизмы. Энергия, и т.д.</li> </ol> <p> Физические законы применимы буквально повсюду, поэтому важно научиться в них разбираться. Для этого необходимо хорошо знать теорию. Но порой в учебниках она практически отсутствует, уступая место бесконечным практическим упражнениям. Понятное дело, что ученикам нужно тренироваться в выполнении заданий, но и понять основные нюансы пройденной темы им тоже важно. В решебнике можно найти подробные пояснения по всем параграфам, которые позволят понять, каким образом использовать те или иные изученные формулы. </p> <h2> Какую роль играет ГДЗ? </h2> <p> 7-9 классы - своеобразный период. Дети уже вроде бы и выросли, но все равно нуждаются в поддержке взрослых, хоть и обращаются к ним за помощью крайне редко. По большей части ребята пытаются разобраться в возникающих проблемах самостоятельно, порой усугубляя их неимоверно. <strong>Решебник Лукашика к сборнику задач 7-9 класс</strong> поможет школьникам полноценно освоить дисциплину, приобрести полноценные навыки. </p> <p> Занимаясь с изданием, ученики получают возможность: </p> <ol> <li>проверить правильность выполненных домашних заданий;</li> <li>внимательно изучить все допущенные ошибки;</li> <li>понять суть сложных заданий;</li> <li>основательно запомнить все правила и применяемые уравнения.</li> </ol> <p> В решебнике есть вся необходимая для учащихся информация. Тщательно изучая ее, они приобретут положенные знания, причем сделают это самостоятельно и значительно быстрее, чем если бы посещали дополнительные курсы или репетитора. Авторы справочника изложили все сведения в нем предельно просто, поэтому даже сильно отставшие от программы подростки смогут запросто ее нагнать. </p> <h2> Почему решебник помогает? </h2> <p> Казалось бы, изучать предмет школьники должны на уроке, где учитель поясняет им новые темы и рассказывает, как работать с материалом. Однако не все ребята воспринимают слова преподавателя. Некоторые и вовсе умудряются пропустить все мимо ушей. Кто-то стесняется переспрашивать, если что-то осталось непонятным. <strong>Готовые ответы по физике к сборнику задач за 7-9 класс Лукашик В.И.</strong> станет отличным дополнением, откуда ученики смогут почерпнуть недостающие сведения. </p> <p> В издании представлено много актуальной информации: </p> <ul> <li>верные ответы к каждому упражнению;</li> <li>развернутые готовые решения;</li> <li>заполненные таблицы, графики и схемы;</li> <li>детальные наглядные примеры.</li> </ul> <p> Все, что требуется от учащихся при работе с решебником - это ответственный подход. Не стоит списывать номера и думать, что учитель ничего не заметит. Особых знаний копирование заданий не приносит, так что появившиеся пробелы обнаружатся на первой же контрольной. 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Физика в этом плане не стала исключение. Кому-то из учеников данная наука дается легко, а некоторые не могут понять даже элементарные вещи. Но порой и отличникам требуется помощь, чтобы лучше разобрать параграф или убедиться в своей правоте. Поэтому работа с <strong>ГДЗ к сборнику задач по физике 7-9 класс Лукашик, Иванова (Просвещение, 2021-2023 гг.)</strong> будет полезна всем детям. </p> <p> Школьникам предстоит изучить следующие непростые темы: </p> <ol> <li>Физические тела. Физические явления.</li> <li>Механическое движение и его относительность. Траектория. Путь. Перемещение.</li> <li>Взаимодействие тел. Масса тел.</li> <li>Сложение и разложение сил.</li> <li>Давление твёрдых тел, жидкостей и газов.</li> <li>Работа и мощность. Простые механизмы. Энергия, и т.д.</li> </ol> <p> Физические законы применимы буквально повсюду, поэтому важно научиться в них разбираться. Для этого необходимо хорошо знать теорию. Но порой в учебниках она практически отсутствует, уступая место бесконечным практическим упражнениям. Понятное дело, что ученикам нужно тренироваться в выполнении заданий, но и понять основные нюансы пройденной темы им тоже важно. В решебнике можно найти подробные пояснения по всем параграфам, которые позволят понять, каким образом использовать те или иные изученные формулы. </p> <h2> Какую роль играет ГДЗ? </h2> <p> 7-9 классы - своеобразный период. Дети уже вроде бы и выросли, но все равно нуждаются в поддержке взрослых, хоть и обращаются к ним за помощью крайне редко. По большей части ребята пытаются разобраться в возникающих проблемах самостоятельно, порой усугубляя их неимоверно. <strong>Решебник Лукашика к сборнику задач 7-9 класс</strong> поможет школьникам полноценно освоить дисциплину, приобрести полноценные навыки. </p> <p> Занимаясь с изданием, ученики получают возможность: </p> <ol> <li>проверить правильность выполненных домашних заданий;</li> <li>внимательно изучить все допущенные ошибки;</li> <li>понять суть сложных заданий;</li> <li>основательно запомнить все правила и применяемые уравнения.</li> </ol> <p> В решебнике есть вся необходимая для учащихся информация. Тщательно изучая ее, они приобретут положенные знания, причем сделают это самостоятельно и значительно быстрее, чем если бы посещали дополнительные курсы или репетитора. 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[] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1112 #items: array:3 [ 0 => App\Models\Element {#1104 #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 [ "id" => 720739 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1095 #items: array:1 [ 0 => App\Models\Edition {#1105 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 1629 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1103 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "tolik" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1101 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1100 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_content_source" => null ] #original: array:21 [ "id" => 1629 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1103 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "tolik" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1101 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1100 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_content_source" => 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 } "task" => array:2 [ "refs" => "580639" "type" => "task" ] "text" => "<p><strong>75.6 [н]</strong> Чему равен дефект массы ядер: протия; дейтерия; трития?</p>" "img" => array:1 [ 0 => array:5 [ "name" => "6-1.jpg" "alt" => null "width" => "1620" "height" => 182 "path" => "/media/fizika_07/lukashik7-9sz22/0-75/6-1.webp?ts=1737923504" ] ] ] #original: array:7 [ "id" => 720739 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1095} "task" => array:2 [ "refs" => "580639" "type" => "task" ] "text" => "<p><strong>75.6 [н]</strong> Чему равен дефект массы ядер: протия; дейтерия; трития?</p>" "img" => array:1 [ 0 => array:5 [ "name" => "6-1.jpg" "alt" => null "width" => "1620" "height" => 182 "path" => "/media/fizika_07/lukashik7-9sz22/0-75/6-1.webp?ts=1737923504" ] ] ] #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\Element {#1097 #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 [ "id" => 770286 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1087 #items: array:1 [ 0 => App\Models\Edition {#1098 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 1633 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1093 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1094 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1092 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1089 …2} "field_content_source" => null ] #original: array:21 [ "id" => 1633 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1093 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1094 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1092 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1089 …2} "field_content_source" => 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 } "task" => array:2 [ "refs" => "580639" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "6-1.png" "alt" => null "width" => "960" "height" => 628 "path" => "/media/fizika_07/lukashik7-9sz22/4-75/6-1.webp?ts=1738264988" ] ] ] #original: array:6 [ "id" => 770286 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1087} "task" => array:2 [ "refs" => "580639" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "6-1.png" "alt" => null "width" => "960" "height" => 628 "path" => "/media/fizika_07/lukashik7-9sz22/4-75/6-1.webp?ts=1738264988" ] ] ] #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\Element {#1091 #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 [ "id" => 1471693 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1034 #items: array:1 [ 0 => App\Models\Edition {#1090 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 5412 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 7" "field_order" => "8" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1082 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "7-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1086 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1085 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1084 …2} "field_content_source" => null ] #original: array:21 [ "id" => 5412 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 7" "field_order" => "8" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1082 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "tolik" "field_edition_type" => "solution" "field_root_dir" => "7-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1086 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1085 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1084 …2} "field_content_source" => 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 } "task" => array:2 [ "refs" => "580639" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>Ядра изотопов водорода: протий (${}^1_1H$), дейтерий (${}^2_1H$), тритий (${}^3_1H$).</p><p>Масса протона: $m_p = 1.007276 \text{ а.е.м.}$</p><p>Масса нейтрона: $m_n = 1.008665 \text{ а.е.м.}$</p><p>Масса ядра дейтерия (дейтрона): $m_d = 2.013553 \text{ а.е.м.}$</p><p>Масса ядра трития (тритона): $m_t = 3.015500 \text{ а.е.м.}$</p><p><strong>Найти:</strong></p><p>Дефект массы ядра протия: $Δm_p$</p><p>Дефект массы ядра дейтерия: $Δm_d$</p><p>Дефект массы ядра трития: $Δm_t$</p><p><strong>Решение:</strong></p><p>Дефект массы ядра $Δm$ — это разность между суммой масс всех нуклонов (протонов и нейтронов), из которых состоит ядро, и действительной массой самого ядра. Он рассчитывается по формуле:</p><p>$Δm = (Z \cdot m_p + N \cdot m_n) - m_{ядра}$</p><p>где $Z$ — число протонов в ядре (зарядовое число), $N$ — число нейтронов, $m_p$ — масса протона, $m_n$ — масса нейтрона, а $m_{ядра}$ — масса ядра.</p><p><strong>протия</strong></p><p>Ядро протия (${}^1_1H$) состоит из одного протона. Следовательно, число протонов $Z=1$, а число нейтронов $N=0$. Масса ядра протия равна массе одного протона $m_{ядра} = m_p$.</p><p>Подставим эти значения в формулу для дефекта массы:</p><p>$Δm_p = (1 \cdot m_p + 0 \cdot m_n) - m_p = m_p - m_p = 0$</p><p>Дефект массы для ядра протия равен нулю, так как ядро состоит из одного нуклона и нет энергии связи, которая проявляется как дефект массы.</p><p><strong>Ответ:</strong> $Δm_p = 0 \text{ а.е.м.}$</p><p><strong>дейтерия</strong></p><p>Ядро дейтерия (${}^2_1H$), или дейтрон, состоит из одного протона ($Z=1$) и одного нейтрона ($N=1$).</p><p>Сумма масс составляющих его нуклонов:</p><p>$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 1 \cdot 1.008665 \text{ а.е.м.} = 2.015941 \text{ а.е.м.}$</p><p>Масса ядра дейтерия $m_d = 2.013553 \text{ а.е.м.}$.</p><p>Дефект массы ядра дейтерия:</p><p>$Δm_d = (Z \cdot m_p + N \cdot m_n) - m_d = 2.015941 \text{ а.е.м.} - 2.013553 \text{ а.е.м.} = 0.002388 \text{ а.е.м.}$</p><p><strong>Ответ:</strong> $Δm_d = 0.002388 \text{ а.е.м.}$</p><p><strong>трития</strong></p><p>Ядро трития (${}^3_1H$), или тритон, состоит из одного протона ($Z=1$) и двух нейтронов ($N=2$).</p><p>Сумма масс составляющих его нуклонов:</p><p>$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 2 \cdot 1.008665 \text{ а.е.м.} = 1.007276 \text{ а.е.м.} + 2.017330 \text{ а.е.м.} = 3.024606 \text{ а.е.м.}$</p><p>Масса ядра трития $m_t = 3.015500 \text{ а.е.м.}$.</p><p>Дефект массы ядра трития:</p><p>$Δm_t = (Z \cdot m_p + N \cdot m_n) - m_t = 3.024606 \text{ а.е.м.} - 3.015500 \text{ а.е.м.} = 0.009106 \text{ а.е.м.}$</p><p><strong>Ответ:</strong> $Δm_t = 0.009106 \text{ а.е.м.}$</p>" ] #original: array:6 [ "id" => 1471693 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1034} "task" => array:2 [ "refs" => "580639" "type" => "task" ] "text" => "<p><strong>Дано:</strong></p><p>Ядра изотопов водорода: протий (${}^1_1H$), дейтерий (${}^2_1H$), тритий (${}^3_1H$).</p><p>Масса протона: $m_p = 1.007276 \text{ а.е.м.}$</p><p>Масса нейтрона: $m_n = 1.008665 \text{ а.е.м.}$</p><p>Масса ядра дейтерия (дейтрона): $m_d = 2.013553 \text{ а.е.м.}$</p><p>Масса ядра трития (тритона): $m_t = 3.015500 \text{ а.е.м.}$</p><p><strong>Найти:</strong></p><p>Дефект массы ядра протия: $Δm_p$</p><p>Дефект массы ядра дейтерия: $Δm_d$</p><p>Дефект массы ядра трития: $Δm_t$</p><p><strong>Решение:</strong></p><p>Дефект массы ядра $Δm$ — это разность между суммой масс всех нуклонов (протонов и нейтронов), из которых состоит ядро, и действительной массой самого ядра. Он рассчитывается по формуле:</p><p>$Δm = (Z \cdot m_p + N \cdot m_n) - m_{ядра}$</p><p>где $Z$ — число протонов в ядре (зарядовое число), $N$ — число нейтронов, $m_p$ — масса протона, $m_n$ — масса нейтрона, а $m_{ядра}$ — масса ядра.</p><p><strong>протия</strong></p><p>Ядро протия (${}^1_1H$) состоит из одного протона. Следовательно, число протонов $Z=1$, а число нейтронов $N=0$. Масса ядра протия равна массе одного протона $m_{ядра} = m_p$.</p><p>Подставим эти значения в формулу для дефекта массы:</p><p>$Δm_p = (1 \cdot m_p + 0 \cdot m_n) - m_p = m_p - m_p = 0$</p><p>Дефект массы для ядра протия равен нулю, так как ядро состоит из одного нуклона и нет энергии связи, которая проявляется как дефект массы.</p><p><strong>Ответ:</strong> $Δm_p = 0 \text{ а.е.м.}$</p><p><strong>дейтерия</strong></p><p>Ядро дейтерия (${}^2_1H$), или дейтрон, состоит из одного протона ($Z=1$) и одного нейтрона ($N=1$).</p><p>Сумма масс составляющих его нуклонов:</p><p>$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 1 \cdot 1.008665 \text{ а.е.м.} = 2.015941 \text{ а.е.м.}$</p><p>Масса ядра дейтерия $m_d = 2.013553 \text{ а.е.м.}$.</p><p>Дефект массы ядра дейтерия:</p><p>$Δm_d = (Z \cdot m_p + N \cdot m_n) - m_d = 2.015941 \text{ а.е.м.} - 2.013553 \text{ а.е.м.} = 0.002388 \text{ а.е.м.}$</p><p><strong>Ответ:</strong> $Δm_d = 0.002388 \text{ а.е.м.}$</p><p><strong>трития</strong></p><p>Ядро трития (${}^3_1H$), или тритон, состоит из одного протона ($Z=1$) и двух нейтронов ($N=2$).</p><p>Сумма масс составляющих его нуклонов:</p><p>$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 2 \cdot 1.008665 \text{ а.е.м.} = 1.007276 \text{ а.е.м.} + 2.017330 \text{ а.е.м.} = 3.024606 \text{ а.е.м.}$</p><p>Масса ядра трития $m_t = 3.015500 \text{ а.е.м.}$.</p><p>Дефект массы ядра трития:</p><p>$Δm_t = (Z \cdot m_p + N \cdot m_n) - m_t = 3.024606 \text{ а.е.м.} - 3.015500 \text{ а.е.м.} = 0.009106 \text{ а.е.м.}$</p><p><strong>Ответ:</strong> $Δm_t = 0.009106 \text{ а.е.м.}$</p>" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "580640" "type" => "task" ] "previous" => array:2 [ "refs" => "580638" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1108 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "page" => Illuminate\Database\Eloquent\Collection {#1111 #items: array:1 [ 0 => App\Models\BookPage {#1042 #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" => 910806 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_url" => "/7-klass/fizika/lukashik/page-253" "field_display_title" => "253" "field_folder" => "1" "field_image_name" => "253" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1040 #items: [] #escapeWhenCastingToString: false } "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1043 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1041 #items: [] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1133 #items: array:1 [ 0 => App\Models\Element {#1132 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 1085188 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1134 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #original: array:6 [ "id" => 1085188 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1134 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "910807" "type" => "book_page" ] "previous" => array:2 [ "refs" => "910805" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1207 #items: array:11 [ 0 => App\Models\Task {#1225 #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" => 580638 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-5" "field_display_title" => "75.5" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1226 …2} "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 {#1227 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1228 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1229 …2} "content" => Illuminate\Database\Eloquent\Collection {#1232 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1238 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580638 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-5" "field_display_title" => "75.5" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1226 …2} "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 {#1227 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1228 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1229 …2} "content" => Illuminate\Database\Eloquent\Collection {#1232 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1238 …2} "page" => array:2 [ …2] ] #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 {#1231 #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" => 580639 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-6" "field_display_title" => "75.6" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1230 …2} "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 {#1237 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1239 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1235 …2} "content" => Illuminate\Database\Eloquent\Collection {#1233 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1236 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580639 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-6" "field_display_title" => "75.6" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1230 …2} "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 {#1237 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1239 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1235 …2} "content" => Illuminate\Database\Eloquent\Collection {#1233 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1236 …2} "page" => array:2 [ …2] ] #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 {#1234 #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" => 580640 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-7" "field_display_title" => "75.7" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1247 …2} "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 {#1248 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1249 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1250 …2} "content" => Illuminate\Database\Eloquent\Collection {#1253 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1264 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580640 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-7" "field_display_title" => "75.7" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1247 …2} "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 {#1248 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1249 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1250 …2} "content" => Illuminate\Database\Eloquent\Collection {#1253 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1264 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Task {#1252 #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" => 580641 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-8" "field_display_title" => "75.8" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1251 …2} "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 {#1263 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1262 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1261 …2} "content" => Illuminate\Database\Eloquent\Collection {#1260 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1305 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580641 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-8" "field_display_title" => "75.8" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1251 …2} "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 {#1263 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1262 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1261 …2} "content" => Illuminate\Database\Eloquent\Collection {#1260 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1305 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 4 => App\Models\Task {#1258 #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" => 580642 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-9" "field_display_title" => "75.9" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1259 …2} "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 {#1304 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1306 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1257 …2} "content" => Illuminate\Database\Eloquent\Collection {#1254 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1324 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580642 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-9" "field_display_title" => "75.9" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1259 …2} "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 {#1304 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1306 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1257 …2} "content" => Illuminate\Database\Eloquent\Collection {#1254 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1324 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 5 => App\Models\Task {#1255 #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" => 580643 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-10" "field_display_title" => "75.10" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1256 …2} "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 {#1323 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1322 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1321 …2} "content" => Illuminate\Database\Eloquent\Collection {#1320 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1346 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580643 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-10" "field_display_title" => "75.10" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1256 …2} "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 {#1323 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1322 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1321 …2} "content" => Illuminate\Database\Eloquent\Collection {#1320 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1346 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 6 => App\Models\Task {#1318 #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" => 580644 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-11" "field_display_title" => "75.11" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1319 …2} "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 {#1345 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1344 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1343 …2} "content" => Illuminate\Database\Eloquent\Collection {#1342 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1363 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 580644 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "253" "field_page_end" => null "field_url" => "/7-klass/fizika/lukashik/75-11" "field_display_title" => "75.11" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1319 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null …10 ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 7 => App\Models\Task {#1340 #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 [ …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] } 8 => 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№75.6 (с. 253)
Условие. №75.6 (с. 253)
скриншот условия
75.6 [н] Чему равен дефект массы ядер: протия; дейтерия; трития?
Решение 4. №75.6 (с. 253)
Решение 7. №75.6 (с. 253)
Дано:
Ядра изотопов водорода: протий (${}^1_1H$), дейтерий (${}^2_1H$), тритий (${}^3_1H$).
Масса протона: $m_p = 1.007276 \text{ а.е.м.}$
Масса нейтрона: $m_n = 1.008665 \text{ а.е.м.}$
Масса ядра дейтерия (дейтрона): $m_d = 2.013553 \text{ а.е.м.}$
Масса ядра трития (тритона): $m_t = 3.015500 \text{ а.е.м.}$
Найти:
Дефект массы ядра протия: $Δm_p$
Дефект массы ядра дейтерия: $Δm_d$
Дефект массы ядра трития: $Δm_t$
Решение:
Дефект массы ядра $Δm$ — это разность между суммой масс всех нуклонов (протонов и нейтронов), из которых состоит ядро, и действительной массой самого ядра. Он рассчитывается по формуле:
$Δm = (Z \cdot m_p + N \cdot m_n) - m_{ядра}$
где $Z$ — число протонов в ядре (зарядовое число), $N$ — число нейтронов, $m_p$ — масса протона, $m_n$ — масса нейтрона, а $m_{ядра}$ — масса ядра.
протия
Ядро протия (${}^1_1H$) состоит из одного протона. Следовательно, число протонов $Z=1$, а число нейтронов $N=0$. Масса ядра протия равна массе одного протона $m_{ядра} = m_p$.
Подставим эти значения в формулу для дефекта массы:
$Δm_p = (1 \cdot m_p + 0 \cdot m_n) - m_p = m_p - m_p = 0$
Дефект массы для ядра протия равен нулю, так как ядро состоит из одного нуклона и нет энергии связи, которая проявляется как дефект массы.
Ответ: $Δm_p = 0 \text{ а.е.м.}$
дейтерия
Ядро дейтерия (${}^2_1H$), или дейтрон, состоит из одного протона ($Z=1$) и одного нейтрона ($N=1$).
Сумма масс составляющих его нуклонов:
$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 1 \cdot 1.008665 \text{ а.е.м.} = 2.015941 \text{ а.е.м.}$
Масса ядра дейтерия $m_d = 2.013553 \text{ а.е.м.}$.
Дефект массы ядра дейтерия:
$Δm_d = (Z \cdot m_p + N \cdot m_n) - m_d = 2.015941 \text{ а.е.м.} - 2.013553 \text{ а.е.м.} = 0.002388 \text{ а.е.м.}$
Ответ: $Δm_d = 0.002388 \text{ а.е.м.}$
трития
Ядро трития (${}^3_1H$), или тритон, состоит из одного протона ($Z=1$) и двух нейтронов ($N=2$).
Сумма масс составляющих его нуклонов:
$Z \cdot m_p + N \cdot m_n = 1 \cdot 1.007276 \text{ а.е.м.} + 2 \cdot 1.008665 \text{ а.е.м.} = 1.007276 \text{ а.е.м.} + 2.017330 \text{ а.е.м.} = 3.024606 \text{ а.е.м.}$
Масса ядра трития $m_t = 3.015500 \text{ а.е.м.}$.
Дефект массы ядра трития:
$Δm_t = (Z \cdot m_p + N \cdot m_n) - m_t = 3.024606 \text{ а.е.м.} - 3.015500 \text{ а.е.м.} = 0.009106 \text{ а.е.м.}$
Ответ: $Δm_t = 0.009106 \text{ а.е.м.}$
Другие задания:
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