2. A velocity selectorconsists of a charged particle passing through crossed electricand
magnetic fields. Theforces exerted by these fields are in opposite directions, andonly
particles of a certainvelocity will move in a straight line. In the following, disregardthe
magnitudes of the fields.In a velocity selector, the particles move toward the east,and
the magnetic field isdirected to the north. What direction should the electric fieldpoint?