Solving a problem in physics section 73 point 83 electr

Solving a problem in physics section 73 point 83 electr

83. A small ball weighing 1 g, having a charge of 1 nC, is suspended on an insulating thread. Another ball having a charge of 222 nC is brought to it from below at a certain distance, and in this case, the tension force of the thread is halved. How far was the ball?

Additional information:

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