A proton travels west at 1.75 x 103 m/s through a 5.40 T magnetic field that is direction out of the page. What is the magnitude of the magnetic force? (charge of a proton is +1.6 x 10-15 C) 1.51 x 10-11 N 1.51 x 104 N 9.45 x 104 N 1.07 x 10-11 N