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Electrostatic Force

  1. Jan 20, 2008 #1
    [SOLVED] Electrostatic Force

    1. The problem statement, all variables and given/known data
    One model of the structure of the hydrogen atom consists of a stationary proton with an electron moving in a circular path around it.The orbital path has a radius of 5.3x10^-11m. The masses of a proton and an electron are 1.67x10^-27kg and 9.1x10^-31kg, respectively. Calculate the electrostatic force between the electron and the proton.


    2. Relevant equations
    F=kq1q2/r^2


    3. The attempt at a solution
    I looked at the question but I really didn't know where to start since none of the qs (charges) where given. I looked at the solution and I found that they used 1.6x10^-19C as the charges, so the equation subbed in looked like this: k(1.6x10^-19C)^2/r^2.
    I don't understand where or how they got 1.6x10^-19C. Any help will be appreciated! :smile:
     
  2. jcsd
  3. Jan 20, 2008 #2

    hage567

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    Homework Helper

    -1.6x10^-19 C is the charge of one electron and is a constant. The charge on a proton is +1.6x10^-19 C.
     
  4. Jan 20, 2008 #3
    O, Ok, I understand. I was looking around the book for something like that but couldn't find it. Teacher didn't even bother to mention it.
     
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