Решение задачи по физике раздел 74 пункт 18 электро

18. Determine the dielectric constant of the medium in which the exact electric charge Q = 4.5 ∙ 10−7 C creates an electric field of strength E = 2 ∙ 104 N / C at a distance of r = 5 cm from itself?

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