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A small rubber sphere has a mass of 3.56 g and a charge of -17.4 C. It levitates, motionless, when placed in a uniform

A small rubber sphere has a mass of 3.56 g and a charge of -17.4 C. It levitates, motionless, when placed in a uniform electric field perpendicular to the ground. What is the magnitude of the electric field (in N/C)? N/C What is the direction of the electric field? O upward O downward O east O west

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