Solving a problem in physics section 73 point 82 electr

Solving a problem in physics section 73 point 82 electr

82. A small ball of mass m = 1 g, having a charge q1 = 1 nC, is suspended on an insulating thread. Another charged small ball is brought to it from below at a distance of r = 2 cm, and the thread tension force is halved. What is the charge q2 of another ball? Wednesday is air.

Additional information:

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