(a) Calculate the force in Newton’s acting on a Dirac monopole of the minimum magnetic charge located a distance 0.5 A from and in the median plane of a magnetic dipole with dipole moment equal to one nuclear magneton (eh/2mρ).

(b) Compare the force in part a with atomic forces such as the direct electrostatic force between charges (at the same separation), the spin-orbit force, the hyperfine interaction. Comment on the question of binding of magnetic mono- poles to nuclei with magnetic moments. Assume that the monopole mass is at least that of a proton.