A deuteron is a charged particle that has the same charge as a proton but approximately twice the mass. An alpha particle has twice the charge and approximately four times the mass of a proton. For this problem, assume the mass ratios are exactly 2 and 4 . If a proton, a deuteron, and an alpha particle move in a uniform magnetic field in circles having the same radii, compare their \((a)\) speeds, \((b)\) kinetic energies, and (c) angular momentum magnitudes.