Решение задачи по физике раздел 71 пункт 60 электро

60. Two point charges q1 = 9 · 10−9 C and q2 = 1.32 · 10−8 C are at a distance of r1 = 40 cm. What work should be done to bring them closer to a distance of r2 = 25 cm?

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