In a nuclear experiment, a proton having kinetic energy of 1.4 MeV moves in a circular path in a uniform magnetic field. Determine the energy (in MeV) which must (i) an alpha particle (q = +2e, m = 4.0 u) and (ii) a deuteron (q = +e, m = 2.0 u) encompass if they are to circulate in the similar circular path?