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Near the surface of earth an electric field points radially downward and has a magnitude of approximately 100 n/c. what charge (magnitude and sign) would have to be placed on a penny that has a mass of 3g to cause it to rise into the air with an upqard acceleration of 0.19 m/s^2
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Near the surface of earth an electric field points radially downward and has a magnitude of approxim...
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