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07-14-2008, 09:37 PM
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| Physics Question? Please help!!?
I have to solve this question: How strong is the repulsive force exerted on two point charges that each carry 2.0 E-4 C of negative charge and are 0.25 meters apart? I was going to use the Coulomb's Law equation, F=(kq1q1/r^2) but I don't know what k is. Am I using the right equation? Another question is: What force is exerted on a test charge of 0.00035 C, if it is placed in an electric field of magnitude 2.0 E 2 N? I don't even know what equation to use for this one. Please help!!!      |
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