Решение задачи по физике раздел 76 пункт 27 электро

27. Two charges Q1 = –1 nC and Q2 = 30 nC are at a distance L = 12 cm from each other. Calculate the field strength at a point lying in the middle between the charges. Determine also the field strength at this point if the first charge is positive.

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