94. On a silk thread in the air hangs motionless a ball weighing 2 g, having a charge of 3 ∙ 10−8 C. Determine the strength of the thread tension if another ball with the same charge of 2.4 ∙ 10−7 C is placed under the ball at a distance of 10 cm from it.

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