Решение задачи по физике раздел 67 пункт 52 электро

52. Two point charges, being in the air (ε = 1) at a distance of r1 = 20 cm from each other, interact with some force. At what distance r2 do these charges need to be placed in the oil to get the same interaction force?

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