At some instant, an alpha particle (q=+2e) has the coordinates (3.0, 0.0, 0.0)(nm) and is moving along the positive x axis with 500 km/s while an electron at (0.0,4.0,0.0)(nm) is moving along negative y-axis with 1000 km/s. Obtain the magnitude and direction of the magnetic force felt by each particle.