Calculate the distance between two protons such that the electrical repulsive force between them is equal to the weight of other ?
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a protons mass = 1.67 × 10^-27kg
q=+e
weight of person = electrical repulsive force
mg = k.qq/r^2
r^2=kq^2/mg
9×10^9×(1.6×10^-19)^2/1.67×10^-27×9.8
=23.04/16.365×10^-2 = 0.014
r = 0.014 m
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