A particle of massmand chargeqenters a region of uniform magneticfieldB=B0ˆz. The field region extends fromx= 0 tox=L, and is ef
fectively infinitein theydirection. The particle is initially traveling along thexaxis. After the particleleaves the magnetic field region, it is observed to have been bent by an angleθ <π2towardthe−yaxis. a.) Is the particle’s charge positive or negative?
b.) What was the particle’s initial momentum?
