Electric Charge
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Charging by Contact


A sphere A, initially charged with 8 coulombs, is placed in contact with another sphere B charged with −2 coulombs, then they are separated, and sphere B is grounded. Another sphere C, with an initial charge of −5 coulombs, is put in contact with sphere A and then separated. Sphere A is placed again in contact with sphere B and separated. Determine the final charges of each sphere.
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