Exiting a linear accelerator, a narrow horizontal beam of protons travels due north. If 1.75 x 1013

Question:

Exiting a linear accelerator, a narrow horizontal beam of protons travels due north. If 1.75 x 1013 protons pass a given point per second,
(a) Determine the magnetic field direction and strength at a location of 2.40 m east of the beam.
(b) Does it seem likely this would demagnetize the encoded magnetic strip on, for example, an ATM card?