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Bohr Model

  1. Nov 30, 2009 #1
    1. The problem statement, all variables and given/known data
    In the Bohr model of a hydrogen atom, what is the magnitude of the electric force exerted between the proton and the electron when the electron is in the n = 1 state?


    2. Relevant equations
    E= - 13.6 eV/ n^2


    3. The attempt at a solution

    I simply plugged in the value for n and got an answer of -13.6 eV. I do not understand why this is incorrect. This is an online homework assignment and asks for the answer in N. Is this where I am making my mistake? Or am I using the wrong formula?
     
  2. jcsd
  3. Nov 30, 2009 #2

    Redbelly98

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    You calculated an energy. The problem asks for a force. Force and energy are different.

    What equation have you been given that can be used to calculate the force between two charges?
     
  4. Nov 30, 2009 #3
    ohh.. so i just use F= kq1q2/r^2

    and since it is in the n=1 state, i would use Bohr's radius for r... correct?
     
  5. Nov 30, 2009 #4

    Redbelly98

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    Yes, that's right.
     
  6. Nov 30, 2009 #5
    Thank you!..
     
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