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Help on electric potential problem

  1. Jun 24, 2004 #1
    I have done this problem over and over and keep getting the wrong answer. What is the electric potential a distance of 3.0E-15m away from a proton.

    I used V=kQ/r and got 4.8E-25 V, and it says the answer is wrong.

    The second part of the question asks what is the potential energy of a system that consists of 2 protons 3.0E-15m apart.

    I used V=k(1.6*10E-19)^2/r and got 7.68E-44J and webassign told me it was wrong. Can anyone help
  2. jcsd
  3. Jun 24, 2004 #2


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  4. Jun 24, 2004 #3
    Thank you so much
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