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Homework Help: More electric forces pleaseee help!

  1. Jan 12, 2008 #1
    1. The problem statement, all variables and given/known data


    Charge q2 experiences no net electric force. What is q1? (s=8.71 cm, q=-1 nC.)

    2. Relevant equations
    F = K * Q * Q1 / r^2

    3. The attempt at a solution
    How I solve for Q1 if I don't know F?
  2. jcsd
  3. Jan 12, 2008 #2
    Oh nevermind...I got it!
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