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How far apart should two protons be if the electrostatic force exerted by one on the other is equal to the weight of one electron?
Wiki User
∙ 12y ago
F=mg (it says in the task), where m is mass of electron and g is the gravitational acc.
F=kQ2/r2 , where Q is the charge, r is the distance, k is constant
Deriving, the expression for distance is:
r2=kQ2/mg
you should get that r = 5m
Wiki User
∙ 12y ago
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