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June 30, 2015

Homework Help: Physics..an electric field

Posted by ~christina~ on Sunday, March 30, 2008 at 12:27pm.

4 charged particles are at the cornedrs of a square of side a as shown.

a) determine the magnitude and direction of the electric field at the location of charge q

b) what is the total electric force exerted on q?

basically picture is like this below

It's a square with 4 corners(circles) and one says 2q, one says q, and the bottom circles say 3q and 4q. AND each side has itself labled as a
( I had to fill the square with .'s since I couldn't draw it without them but in reality the square is empty.

(2q)_____(q)
|.........|
|.........|
(3q)____(4q)

I don't really get how to do this.

Help please

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