Two charged balls are hanging by threads as shown below: 5.0° Each ball has a mass of 6.79 grams and a charge Q nC, and the length of each thread is 31.0 cm. For what value of Q will the masses be held in place? Assume units of nC = 10-⁹℃ for the charge and assume 3 significant digits.

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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.