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# 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. Compare the strength of these forces by determining the ratio of their magnitudes for an electron and a proton? $(mp = 1.67 × 10^{–27}\; kg, m_e = 9.11 × 10^{–31}\; kg)$

$2.4 \times 10^{39}$