A water droplet of radius 0020 mm remains stationary in the
A water droplet of radius 0.020 mm remains stationary in the air.If the downward-directed electric field of the Earth is 150 N/C, how many excess electron charges must the water droplet have? Express your answer using two significant figures.
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a water droplet of radius 0020 mm remains stationary in the airif the downward-directed electric field of the earth is
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