Posted by sandhu on Monday, September 21, 2009 at 12:15am.
You did not provide the "as shown" figure and also wrote the charge of q incorrectly.
This problem requires an adding up of the electric fields or potentials due to each particle, for which you need to know the locations of the 2 uC charges. You should be able to do this yourself. We are here to teach and explain, not to do your homework for you.
i know the answers to parts a and b the answer is simple if you consider the directions of the forces. however for part c does potential at origin simply equal the potential from one charge doubled. V = 2(k)(q-particle)/r?
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