A beam of electrons, such as in a computer monitor CRT, traveling in the X direction enters a region which has an electric field of 3,000 volts/meter directed in the Y direction and a magnetic field of 0.004 Tesla directed in the Z direction. The two separate forces are acting on the beam of electrons. The direction and magnitude of the electric field is in such a way as to oppose and cancel out completely the force (Lorentz) caused by the electric field. I need to determine the velocity of the electrons in meters/second.