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What is the electric potential energy of a proton

  1. Mar 25, 2013 #1
    1. The problem statement, all variables and given/known data

    What is the electric potential energy of a proton located 20.0 A (one angstrom or 1A is equal to 10^-10m) from another proton?

    2. Relevant equations
    Ep= F x d
    F= kq1q2/r^2

    3. The attempt at a solution

    Ep= Fxd

    therefore Ep = (Kq1q2)(d)/r^2
    so Ep= KQ1Q2/r

    = 1.152x10^-19J

    Help me check see if i got it right please!
  2. jcsd
  3. Mar 25, 2013 #2
    Your answer looks right :)
    It would be easier to directly use the formula for the potential energy rather than starting with the force equation.
  4. Mar 25, 2013 #3

    rude man

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    Gold Member

    I second the response.
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