Monday
December 22, 2014

Homework Help: physics

Posted by lindsay on Thursday, June 7, 2012 at 6:35pm.

a square with side length 2.0 cm has a charge of -1.0x10^-6C at every corner. What is the magnitude and direction of the electric force on each charge?
What is the force on a fifth charge placed in the centre of this square?
Does the sign of the fifth charge affect the magnitude or direction of force on it?

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