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Homework Help: Forces & Two Charges- Quick question

  1. Oct 16, 2008 #1
    1. The problem statement, all variables and given/known data
    A 2 nC charge is at the origin and a -4nC charge is at x = 1 cm.

    a) At what x coordinate is would you place a proton so that it would experience no net force?

    Ok I solved for the coordinate in between the two charges, and I got the same answer as my book. However, the book only gives one answer and I think that there should be another place where the force is zero to the left of the origin. Am I correct?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Oct 16, 2008 #2
    any thoughts?
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