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Консультация № 195799
03.06.2019, 23:48
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Найти значение модуля вектора напряжённости электрического поля E- в точке О(20; 40), созданного тремя точечными зарядами q1 = 49 нКл, q2 = -135 нКл и q3 = -137 нКл, координаты точечных зарядов: (5; 10), (25; 10) и (40; 40) соответственно. Координаты указаны в сантиметрах. Сделать рисунок.
Найти значение модуля вектора напряжённости электрического поля E- в точке О(20; 40), созданного тремя точечными зарядами q1 = 49 нКл, q2 = -135 нКл и q3 = -137 нКл, координаты точечных зарядов: (5; 10), (25; 10) и (40; 40) соответственно. Координаты указаны в сантиметрах. Сделать рисунок.
Обсуждение
05.06.2019, 10:03
общий
это ответ
Здравствуйте, dar777!
Вычислим квадраты расстояний от зарядов
до точки 
используя формулу расстояния между двумя точками [1, с. 49].
(см2);
(см2);
(см2).
Вычислим величины напряжённостей электрических полей, создаваемых зарядами в точке используя формулу на с. 185 [2], приняв, что 
(заряды находятся в вакууме). При этом обозначим 
Н*м2/Кл2.
(В/м);
(В/м);
(В/м).
Вычислим проекции векторов напряжённостей электрических полей, создаваемых зарядами в точке на координатные оси, используя формулу (6.2) на с. 38 [1].
(В/м);
(В/м);
(В/м);
(В/м);
(В/м);
(В/м);
Вычислим проекции вектора напряжённости результирующего электрического поля в точке используя формулу на с. 37 [1].
(В/м);
(В/м).
Следовательно, искомая напряжённость, согласно формуле на с. 36 [1], составляет
(В/м).
Рисунок находится в прикреплённом файле.
Литература
1. Письменный Д. Т. Конспект лекций по высшей математике: в 2 ч. Ч. 1. -- М.: Айрис-пресс, 2207. -- 288 с.
2. Яворский Б. М., Селезнёв Ю. А. Справочное руководство по физике для поступающих в вузы и для самообразования. -- М.: Наука, 1989. -- 576 с.
Вычислим квадраты расстояний от зарядов
до точки используя формулу расстояния между двумя точками [1, с. 49]. (см2); (см2); (см2).Вычислим величины напряжённостей электрических полей, создаваемых зарядами
в точке используя формулу на с. 185 [2], приняв, что (заряды находятся в вакууме). При этом обозначим Н*м2/Кл2. (В/м); (В/м); (В/м).Вычислим проекции векторов напряжённостей электрических полей, создаваемых зарядами
в точке на координатные оси, используя формулу (6.2) на с. 38 [1]. (В/м); (В/м); (В/м); (В/м); (В/м); (В/м);Вычислим проекции вектора напряжённости результирующего электрического поля в точке
используя формулу на с. 37 [1]. (В/м); (В/м).Следовательно, искомая напряжённость, согласно формуле на с. 36 [1], составляет
(В/м).Рисунок находится в прикреплённом файле.
Литература
1. Письменный Д. Т. Конспект лекций по высшей математике: в 2 ч. Ч. 1. -- М.: Айрис-пресс, 2207. -- 288 с.
2. Яворский Б. М., Селезнёв Ю. А. Справочное руководство по физике для поступающих в вузы и для самообразования. -- М.: Наука, 1989. -- 576 с.
Прикрепленные файлы:
5
Это самое лучшее решение!
Об авторе:
Facta loquuntur.
Facta loquuntur.
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