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April 20, 2014

Homework Help: physics coulombs law

Posted by adithya on Wednesday, December 5, 2012 at 4:37am.

a negative charge 5.0 X 10^-4 C exerts a repulstio force of 7.0 N .on second charge away 0.05 m away.
what is the sign and magnitude of the second charge

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