A proton having an initial velocity of 23.7i Mm/s enters a uniform magnetic field of magnitude 0.270 T with a direction A perpendicular to the proton's velocity. It leaves the field-filled region with velocity -23.7j Mm/s. Determine the direction of the magnetic field. i -j k -i -k j Determine the radius of curvature of the proton's path while in the field, m Determine the distance the proton traveled in the field, m Determine the time interval for which the proton is in the field.