A point charge of -.70microC is fixed to one corner of a square. An identical charge is fixed to the diagonally opposite corner. A point charge q is fixed to each of the remaining corners. The net force acting on either of the charges q is zero. Find the magnitude and algebraic sign of q.(adsbygoogle = window.adsbygoogle || []).push({});

The only equation I know for this type of proble is F=[k(q1)(q2)]/r^2

Please help me

sbraman

I have tried to work this out by setting up the above equation so that the r^2 would cancel since I don't have that. I also have tried to figure it out using a right triangle but all of my answers are incorrect.

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# Homework Help: Point charges in a square Help please

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