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keemosabi
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Homework Statement
A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.125 m). The charges on the circle are -4.00 µC at the position due north and +5.00 µC at the position due east. What is the magnitude and direction of the net electrostatic force acting on the charge at the center? Specify the direction relative to due east (0°).
http://g.imagehost.org/download/0048/force Click for a bigger image.
I used Couloumb's Law to get the above picture, but what do I do now?
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