A proton moves at constant velocity in the +y direction, through a region in which there is an electric field and a magnetic field. The electric field is in the +x direction and has magnitude 200 V/m....

A proton moves at constant velocity in the +y direction, through a region in which there is an electric field and a magnetic

field. The electric field is in the +x direction and has magnitude 200 V/m. The magnetic field is in the −z direction and has

magnitude 0.95 T.