. an electromagnet produces a magnetic field of 0.60 t in the vertical downward direction. an electron of speed 6.0 106 m/s is moving through this magnetic field. what are the magnitude and the direction of the magnetic force on the electron if the electron is moving (a) vertically downward? (b) horizontally toward the east? (c) horizontally toward the south? (d) toward the south and downward at an angle of 30 from horizontal?