km^2/d^2=m*g
d^2=k*m*g where m is mass proton, g= 9.8N/kg, and k is the coulomb constant.
d=sqrt(about 9E9*1.7E-27*9.8)
= about 1.2E-8 meters
Calculate the distance between the two proton such that the electrical repulsive force between them is equal to the weight of either
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