Near San Francisco, where the vertically downward component of
the earth's magnetic field is 5.8 x 10-5 T, a car is traveling
forward at 33 m/s. The width of the car is 2.0 m. Find the emf
induced between the two sides of the car. If positive charge
accumulates on the driver's side, the enter the emf as a positive
number. If negative charge accumulates on the driver's side, the
enter the emf as a negative number.