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Консультация № 200000
27.12.2020, 21:46
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос: Напряженность электрического поля у поверхности Земли
E0 = -130В / м (знак минус показывает, что вектор напряженности направлен в центр Земли). На высоте h = 0,5 км напряженность E1 = -50 В / м. Вычислить объемную плотность p электрических зарядов в атмосфере, считая, что она до высоты h постоянна. Радиус Земли RЗ = 6,37 · 10 в 6 степени м.
E0 = -130В / м (знак минус показывает, что вектор напряженности направлен в центр Земли). На высоте h = 0,5 км напряженность E1 = -50 В / м. Вычислить объемную плотность p электрических зарядов в атмосфере, считая, что она до высоты h постоянна. Радиус Земли RЗ = 6,37 · 10 в 6 степени м.
Обсуждение
02.01.2021, 20:21
общий
это ответ
Здравствуйте, Vlad!
В общем случае напряжённость электрического поля внутри шарового слоя с внутренним радиусом R на расстоянии r > R от его центра определяется выражением
где [$961$] - объёмная плотность заряда, [$949$][sub]0[/sub] = 8.8542[$183$]10[sup]-12[/sup] Ф/м = электрическая постоянная. В частности,
и 
откуда
и 
В данном случае для E[sub]0[/sub] = -50 В/м, E[sub]1[/sub] = -130 В/м, r[sub]0[/sub] = R[sub]З[/sub] = 6370000 м, r[sub]1[/sub] = R[sub]З[/sub] + h = 6370500 м получаем
Кл/м3.
В общем случае напряжённость электрического поля внутри шарового слоя с внутренним радиусом R на расстоянии r > R от его центра определяется выражением
где [$961$] - объёмная плотность заряда, [$949$][sub]0[/sub] = 8.8542[$183$]10[sup]-12[/sup] Ф/м = электрическая постоянная. В частности,
и откуда
и В данном случае для E[sub]0[/sub] = -50 В/м, E[sub]1[/sub] = -130 В/м, r[sub]0[/sub] = R[sub]З[/sub] = 6370000 м, r[sub]1[/sub] = R[sub]З[/sub] + h = 6370500 м получаем
Кл/м3.
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