6. Two point charges q1 = 24 nC and q2 = 7.5 nC are in a medium with a dielectric constant ε at a distance of r = 3 cm. The force of interaction of charges is F = 90 μN. Find ε. Indicate the nature of the interaction: attraction or repulsion?

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