5.) A velocity selector uses a combination of electric and magnetic fields to filter out charged particles with velocities other than the one desired. It does this by balancing the force on a moving charge by the magnetic field with the force on a charge by the electric field (Fner = F + F = 0). In this case, a proton moves undeflected at a speed of 6.67105 m/s through an electric field measuring 2.00105 N/C, as oriented in the figure. Find the magnetic field strength and direction that keeps this proton traveling in a straight line. V=6.67 x 105 E