Задача 31575.

Balls 1 g and 10 g charged. Charge the first ball - 3 10 ^ -14 Kl, and the charge of the second to be determined. It is known that the strength of the Coulomb repulsion is balanced by the force of mutual attraction.

Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
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