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October 25, 2014

Homework Help: physics im stuck

Posted by physdummy on Sunday, August 31, 2008 at 7:56am.

Two identical small insulating balls are suspended by separate 0.27 m threads that are attached to a common point on the ceiling. Each ball has a mass of 6.20 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and, as a result, spread apart with an angle of 20 between the threads.
(a) What is the charge on each ball?
q = ----------C

(b) What is the tension in the threads?
F = ---.0062---N

cant figure out part (a) show all workings pliz

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