a) & c) F = kq^2/r^2
b) & d) PE = kq^2/r
The size of Rutherford's atom is about 0.1 nm.
(a) Calculate the attractive electrostatic force between an electron and a proton at that distance.
(b) Calculate the electrostatic potential energy of that atom. Express the result in unit eV.
(c) The size of Rutherford's atomic nucleus is about 1 fm. Calculate the repulsive electrostatic force between two protons at that distance.
(d) Calculate the electrostatic potential energy of a pair of protons in such a nucleus. Express the result in unit MeV.
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