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Консультация № 195615
14.05.2019, 15:44
0.00 руб.
16.05.2019, 03:04
0
1
1
Уважаемые эксперты! Пожалуйста, ответьте на вопрос:
Электрическое поле создано равномерно заряженным по объёму шаром из газообразного диэлектрика с диэлектрической проницаемостью [$949$] = 1,5 и объёмной плотностью [$961$] = 2/[$960$][$183$]10-16 Кл/м3. С каким ускорением начнёт двигаться электрон, помещённый в точку А на расстоянии r = 30 см от шара, если r меньше радиуса шара? Сделать рисунок.
Электрическое поле создано равномерно заряженным по объёму шаром из газообразного диэлектрика с диэлектрической проницаемостью [$949$] = 1,5 и объёмной плотностью [$961$] = 2/[$960$][$183$]10-16 Кл/м3. С каким ускорением начнёт двигаться электрон, помещённый в точку А на расстоянии r = 30 см от шара, если r меньше радиуса шара? Сделать рисунок.
Обсуждение
16.05.2019, 14:31
общий
это ответ
Здравствуйте, dar777!
Согласно формуле на с. 27 [1], напряжённость поля шара в точке A составляет E=[$961$]r/(3[$949$][$949$]0). Тогда сила, действующая на электрон, имеет величину F=eE, а ускорение, которое сообщает эта сила электрону, --
Литература
1. Физика: учеб. пособие. В 2 ч. Ч. 2. -- Минск: РИВШ, 2009. -- 312 с.
Согласно формуле на с. 27 [1], напряжённость поля шара в точке A составляет E=[$961$]r/(3[$949$][$949$]0). Тогда сила, действующая на электрон, имеет величину F=eE, а ускорение, которое сообщает эта сила электрону, --
a=F/m=eE/m=e[$961$]r/(3m[$949$][$949$]0)=1,60*10-19*(2/[$960$])*10-16*0,30/(3*9,11*10-31*1,5*8,85*10-12)[$8776$]2,53*105 (м/с2).
Литература
1. Физика: учеб. пособие. В 2 ч. Ч. 2. -- Минск: РИВШ, 2009. -- 312 с.
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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