Question: A spherical water drop 1.20 pm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 462N/C.

A spherical water drop 1.20 pm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 462N/C.
(a) What is the magnitude of the gravitational force on the drop?
(b) How many excess electrons does it have?

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