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Консультация № 198641
19.05.2020, 14:45
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Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Электрон, масса которого 9,1 * 10 ^ -31 кг, под действием однородного электрического поля напряженностью 94 H / Кл движется по ускоренному. Визначте ускоренного электрона
Электрон, масса которого 9,1 * 10 ^ -31 кг, под действием однородного электрического поля напряженностью 94 H / Кл движется по ускоренному. Визначте ускоренного электрона
Обсуждение
21.05.2020, 07:24
общий
это ответ
Здравствуйте, Aspirianse!
Условие : масса электрона m=9,1·10-31 кг, Напряжённость поля E = 94 H / Кл .
Вычислить ускорение электрона.
Решение: В электрическом поле с напряжённостью E на электрон действует ускоряющая сила
F = E·q = 1,504·10-17 Н
где q = 1,6·10-19 Кл - заряд электрона (Кл - это сокращение от слова Кулон).
По второму закону Ньютона вычисляем ускорение, как отношение укоряющей силы к массе электрона
a = F / m = (1,504·10-17) / (9,1·10-31) = 1,65·1013 м/с2
Ответ : ускорение электрона в начале разгона равно 1,65·1013 м/с2 . При таком огромном ускорении электрон мигом достигнет половины скорости света c=3·108 м/с , и затем в рассчёте ускорения придётся учитывать релятивистские эффекты.
См учебно-методические статьи "Второй закон Ньютона" Ссылка1 , Ссылка2
Решения похожих задач смотрите на страницах : "Электрон помещён в точку A неоднородного электростатич поля…" rfpro.ru/question/194315
Электрон… влетел в однородное электрическое поле rfpro.ru/question/186804
Условие : масса электрона m=9,1·10-31 кг, Напряжённость поля E = 94 H / Кл .
Вычислить ускорение электрона.
Решение: В электрическом поле с напряжённостью E на электрон действует ускоряющая сила
F = E·q = 1,504·10-17 Н
где q = 1,6·10-19 Кл - заряд электрона (Кл - это сокращение от слова Кулон).
По второму закону Ньютона вычисляем ускорение, как отношение укоряющей силы к массе электрона
a = F / m = (1,504·10-17) / (9,1·10-31) = 1,65·1013 м/с2
Ответ : ускорение электрона в начале разгона равно 1,65·1013 м/с2 . При таком огромном ускорении электрон мигом достигнет половины скорости света c=3·108 м/с , и затем в рассчёте ускорения придётся учитывать релятивистские эффекты.
См учебно-методические статьи "Второй закон Ньютона" Ссылка1 , Ссылка2
Решения похожих задач смотрите на страницах : "Электрон помещён в точку A неоднородного электростатич поля…" rfpro.ru/question/194315
Электрон… влетел в однородное электрическое поле rfpro.ru/question/186804
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