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Homework Help: Average potential and kinetic energies for H ground state

  1. Oct 27, 2015 #1
    1. The problem statement, all variables and given/known data
    Calculate the average potential and kinetic energies for the electron in the ground state of hydrogen.

    2. Relevant equations

    3. The attempt at a solution
    I know that KE = E - <U(r)>. I know that E = (-KZ^2e^2)/(2a0) and I know that U(r) = -KZe^2/r but I cant figure out how to get the average potential energy from this so that the denominator is the same as the E and so that they can add together to get KE.
  2. jcsd
  3. Oct 27, 2015 #2
  4. Oct 27, 2015 #3
    Thanks a lot! That makes a lot of sense. I appreciate it!
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