When at rest, a proton experiences a net electromagnetic force that has a magnitude of 7.2 × 10-14 N and points in the positive x-direction. When the same proton later moves with a speed of 2.0 × 106 m/s in the positive y-direction, the net electromagnetic force decreases to a magnitude of 5.6 × 10-14 N but still points in the positive x-direction.
(i) Find the magnitude and direction of the electric field.
(ii) Find the magnitude and direction of the magnetic field.