The picture tube in an old black-and-white television employs magnetic deflection coils instead of electric deflection plates. Assume that an electron beam is accelerated via a 53.6 kV potential difference and then via a region of uniform magnetic field 1.00 cm broad. The screen is situated 10.4 cm from the center of the coils and is 45.4 cm broad. If the field is turned off, the electron beam strikes the center of the screen. Avoiding relativistic corrections, what field magnitude is essential to deflect the beam to the side of the screen?