Two metal balls with equal charges and equal masses of 400 grams are suspended from a certain common point by a thread that is 120 cm long. Electrostatic repulsion keeps the metal balls 20.0 m apart. Draw the figure that illustrates the problem, then calculate the charge on each ball.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.