54. Two point charges are repelled from each other in oil (dielectric constant ε1 = 5) with a force of F1 = 100 mN. Determine the repulsive force F2 of these charges in kerosene (ε2 = 2), if they are at a distance three times smaller than in oil.

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