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Stuck on a different problem.

  1. Feb 17, 2004 #1
    https://hw.utexas.edu/tmp/Muddam1/1077041275Xuj.pdf

    I'm stuck on fourteen. Without the charge's coordinates how can I calculate the electric force on the charge?
     
  2. jcsd
  3. Feb 17, 2004 #2

    Doc Al

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    Staff: Mentor

    The charge is at the origin, coordinates 0,0. (Hint: Problem #14 uses the results of prob #12.)
     
  4. Feb 17, 2004 #3
    Oops.

    Didn't take notice of the word "origin". Anyway, you don't need to the answers from #12 because F= k*q1*q2/r^2 and you find force of the charges on the origin charge and take the magnitude of it.
     
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