Drop causes the drop to float in the air for an instant

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Reference no: EM13674732

A charged oil drop that has a mass of 4.90×10¹² kg and carries 10 elementary charges is cantered 50 mm below the center of an oppositely charged sphere that has a radius of 5.0 mm . Treat the drop as a particle. What charge must the sphere be given so that the electric force it exerts on the drop causes the drop to float in the air for an instant?

Reference no: EM13674732

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