Решение задачи по физике раздел 68 пункт 1 электро

1. Three point charges Q1 = 30 nC, Q2 = −15 nC and Q3 = 40 nC are in vacuum at the vertices of an equilateral triangle whose side length is a = 5.0 cm. What is the potential energy W of the electrostatic interaction of the system of these charges?

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