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Homework Help: Finding Centripetal Acceleration?

  1. Sep 15, 2012 #1
    1. The problem statement, all variables and given/known data

    In the Bohr model of the hydrogen atom, the electron revolves around the nucleus and has a mass of 9.1 x 10^-31 kg. If the radius of the orbit of the electron is 5.3 x 10^-11 m and the electron makes 6.6 x 10^15 r/s, find

    The centripetal acceleration


    2. Relevant equations
    Ac= 4pi^2 X R/T^2
    3. The attempt at a solution

    I know it should be 4pi^2 X 5.4 X 10^-11/ 1/6.6 X 10^15 ^2

    But.... the answer is 9.1 X10^ 22 and I am NOT getting the right answer. I feel like there is something wrong within my operation.

    Thanks!
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Sep 15, 2012 #2

    rl.bhat

    User Avatar
    Homework Helper

    Try this one.
    Ac. = 4π2f2R
    Substitute the values.
     
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