A particle that has an 6.4-µC charge moves with a velocity of magnitude 5.2 x 105 m/s along the +x axis. It experiences no magnetic force, although there is a magnetic field present. The maximum possible magnetic force that the charge with the given speed could experience has a magnitude of 0.38 N. Find the magnitude and direction of the magnetic field. Note that there are two possible answers for the direction of the field.