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GRAvit__
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Homework Statement
What is the force of attraction between a proton and an electron in a hydrogen atom, if they are 5.00 x 10^-11m apart?
Homework Equations
F=kQ1Q2/r^2
The Attempt at a Solution
I really don't know where to go from here since i don't know the charge of the proton or electron. I just started the unit on electricity and am having a hard time with the first exercise sheet
Thanks for any help you can give me