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disque
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Homework Statement
A small drop of water measuring 0.6 mm in diameter, hangs suspended above the ground due to the Electric field of the Earth (140 N/C). How many extra electrons are on the drop of water?
Homework Equations
i know k=8.99 x 10^9
abs(f)=K((q)/(r^2))
The Attempt at a Solution
I don't even know where to start given the radius being .3mm and the E being 140 N/C
I know it always helps to draw a diagram, and i have that done but it's getting me absolutely nowhere. Please help, it would be greatly appreciated