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Консультация № 192450
24.01.2018, 18:25
0.00 руб.
0
6
1
Здравствуйте, уважаемые эксперты! Прошу вас помочь с задачками:
1. Шарик массой 20 г подвешен на нерастяжимой нити. На какой минимальный угол надо отклонить шарик, чтобы при дальнейшем движении нить оборвалась, если максимально возможная сила натяжения нити равна
0.3 Н?
2. Два одинаковых металлических заряженных шара находятся на расстоянии r = 50см. Сила отталкивания шаров F1 = 100 мкН. После того как шары привели в соприкосновение и удалили друг от друга на прежнее расстояние, сила отталкивания возросла и стала равной F2 = 200 мкН . Вычислить заряды Q1 и Q2, которые были на шарах до их соприкосновения. Диаметр шаров считать много меньшим расстояния между ними.
Заранее благодарна!
1. Шарик массой 20 г подвешен на нерастяжимой нити. На какой минимальный угол надо отклонить шарик, чтобы при дальнейшем движении нить оборвалась, если максимально возможная сила натяжения нити равна
0.3 Н?
2. Два одинаковых металлических заряженных шара находятся на расстоянии r = 50см. Сила отталкивания шаров F1 = 100 мкН. После того как шары привели в соприкосновение и удалили друг от друга на прежнее расстояние, сила отталкивания возросла и стала равной F2 = 200 мкН . Вычислить заряды Q1 и Q2, которые были на шарах до их соприкосновения. Диаметр шаров считать много меньшим расстояния между ними.
Заранее благодарна!
Обсуждение
26.01.2018, 08:11
общий
Адресаты:
Чтобы решить первую задачу, рассмотрите, пожалуйста, следующий пример.
Об авторе:
Facta loquuntur.
Facta loquuntur.
29.01.2018, 08:48
общий
это ответ
Здравствуйте, matyuhina_aleksa!
Рассмотрим задачу 1.
Из формулы
вывод которой показан на изображении в моём сообщении в мини-форуме консультации, получим, что
Вычислить искомый угол, на который нужно отклонить шарик, Вы можете по последней формуле самостоятельно. У меня получился ответ
Рассмотрим задачу 1.
Из формулы
вывод которой показан на изображении в моём сообщении в мини-форуме консультации, получим, что
Вычислить искомый угол, на который нужно отклонить шарик, Вы можете по последней формуле самостоятельно. У меня получился ответ
4
Спасибо!
Об авторе:
Facta loquuntur.
Facta loquuntur.
05.02.2018, 18:56
общий
Адресаты:
Чем Вам не понравился мой ответ, что Вы снизили оценку?
Об авторе:
Facta loquuntur.
Facta loquuntur.
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