Решение задачи по физике раздел 73 пункт 90 электро

90. A bead weighing 100 mg and a charge q = 16.7 nC, suspended on a thread. At what distance should be brought to it from below, equal in magnitude, of the same charge, so that the tension force of the thread is reduced by half.

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