Coulomb’s law for electrostatic force between two point
charges and Newton’s law for gravitational force between two
stationary point masses, both have inverse-square dependence on
the distance between the charges/masses. (a) Compare the strength
of these forces by determining the ratio of their magnitudes (i) for an
electron and a proton and (ii) for two protons. (b) Estimate the
accelerations of electron and proton due to the electrical force of their
mutual attraction when they are 1 Å (= 10^-10 m) apart? (mp = 1.67 ×
10^–27 kg, me = 9.11 × 10^–31 kg)
