A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magni

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A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magni

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A small drop of water is suspended motionless in air by a
uniform electric field that is directed upward and has a magnitude
of 8420 N/C. The mass of the water drop
is 2.69 × 10-9 kg. How many excess
electrons or protons reside on the drop?
Number_ Units _
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