Solving a problem in physics section 73 point 92 electr

Solving a problem in physics section 73 point 92 electr

92. A small ball weighing 3 ∙ 10−4 kg is suspended on a thin silk thread and has a charge of 3 ∙ 10−7 C. What will be the tension of the thread if another ball with a charge of 5 × 10−8 C of the same sign is brought down from it at a distance of 30 cm from the bottom?

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