Задача 31153.

Two conductive ball weighing 0,004 kg each are suspended in the air on a non-conductive strands 205 cm in length to one hook. BALL reported equal like charges, so that the balls separated by a distance of 90 cm. Determine the charge of each ball.

Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I try to help.