A proton moves perpendicularly to a magnetic field that has a magnitude of 6.48 ´ 10^-2 T. A magnetic force of 7.16 ´ 10^-14 N is acting on it. If the proton moves a total distance of 0.500 m in the magnetic field, how long does it take for the proton to move across the magnetic field? If the magnetic force is directed north and the magnetic field is directed upward, what was the proton’s velocity?