Physics

Protons, which have a kinetic energy of 7.5 MeV, move in the +x direction. They enter a region of uniform magnetic field pointing into the plane of the page with a magnitude of B = 0.14 T. The region extends from x = 0 to x = 2.0 m. a) Determine the y component of a proton's momentum as it exits the magnetic field region. b) Find the angle between the initial velocity vector as the protons enter the field and the final velocity vector as the protons exit the field region