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    yhzhang Posts: 17, Reputation: 1
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    Oct 13, 2012, 10:56 PM
    Physic question - Force on a lone charge
    I need help with this question, I don't know how to do it. Thanks in advance.

    Q: What electric force would a stationary 5.1 C charge experience if it were far away from any other charges?

    I tried to put it into the formula F=k*(q1*q2)/r^2, but I don't what "r" should I put into.

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