Electrostatic Force of a hydrogen atom

AI Thread Summary
The discussion focuses on calculating the electrostatic force between an electron and a proton in a hydrogen atom model, where the electron orbits the proton at a radius of 5.3x10^-11m. The relevant formula for this calculation is F=kq1q2/r^2, where k is the electrostatic constant. Participants clarify that the charges of the electron and proton are both ±1.6x10^-19C, which are standard constants. One user expresses confusion about the origin of these charge values, highlighting a lack of information in their textbook. The conversation emphasizes the importance of understanding fundamental constants in physics calculations.
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[SOLVED] Electrostatic Force

Homework Statement


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.


Homework Equations


F=kq1q2/r^2


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:
 
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-1.6x10^-19 C is the charge of one electron and is a constant. The charge on a proton is +1.6x10^-19 C.
 
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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