Recent content by Count

  1. Count

    A 3.5 nC charge is at the origin and a -10 nC charge is at x = 2 cm

    I don't understand. If 3.5nC is at the origin, and -10nC is 2cm to the right of that, then the only place for a point charge to be placed is to the left of the origin. That unknown distance is x, so the distance from -10nC to the proton is .02m+x. Solving for x would give the results I got, and...
  2. Count

    A 3.5 nC charge is at the origin and a -10 nC charge is at x = 2 cm

    Apparently the answer is not 2.9 cm or 7.4mm. I've looked at similar questions in this thread and solving the exact same way gives me the same answers. I set it up as (3.5/x^2)=(10/(.02+x)^2). What am I doing wrong?