Решение задачи по физике раздел 59 пункт 35 электро

35. Identical charges Q = 3,0 nC located at the vertices of an equilateral triangle. What is the charge q1 should be placed in the center of the triangle to the resultant force acting on each charge, has become zero?

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