A proton with kinetic energy 68.4 MeV is seen to move in a circular path while in a region with a uniform magnetic field. What kinetic energy must an alpha particle (q = +2e, m = 6.64×10−27 kg) have if it is to move in the same circular path as the proton (q = +e, m = 1.67×10−27 kg)? MeV