Решение задачи по физике раздел 72 пункт 87 электро

87. A copper ball with a diameter of 1 cm is placed in oil. The density of the oil is 800 kg / m3. What is the charge of the ball, if in a uniform electric field the ball is suspended in oil? Electric field strength 36 kV / cm (in oil). The density of copper is 8600 kg / m3. The answer is expressed in nC.

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