Posted by Guy on Saturday, November 17, 2012 at 5:34pm.
I got 6.94855*10^24 meters but this seems way to big
Fe = k q1 q2 /R^2 = 9.81 ( 1.67*10^-27)
where k = 9*10^9
q1=q2 = 1.6*10^-19
R^2 = 9*10^9 * 2.56*10^-38 /(16.4*10^-27)
= 1.4 * 10^-2
take square root
R = 1.2 * 10^-1 = .12 meters
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