Предмет: Физика, автор: flash77779

Физика. Решить задачи с фото. Задачи нужно расписать.

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Автор ответа: nikebod313

1

Розв'язано первші дві задачі.

Задача 1. На тонкій шовковій нитці підвісили кульку масою 1 г, заряд якої дорівнює –5 нКл. На яку відстань знизу до неї треба піднести другу кульку з зарядом 49 нКл, щоб натяг нитки збільшився вдвічі?

Задача 2. В однорідне електричне поле, утворене двома паралельними пластинами, розміщеними вертикально, помістили кульку масою 2 г, підвішену на тонкій шовковій нитці. Кульці надали заряд 1 мкКл. Визначте напруженість поля, якщо нитка відхилилась на 30° від вертикалі.

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