Решение задачи по физике раздел 74 пункт 8 электро

8. A ball weighing 150 mg, suspended on a silk thread, has a charge of 10 nC. Determine the sign and the modulus of charge, which was presented to the ball from below at a distance of 3 cm, if the tension force doubled.

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)