A particle of charge q = -9.2 x 10-15 C and mass m = 3.1 x 10- kg is sent into a region of uniform magnetic field with an intial speed of v = 1.8 m/s, as shown. The magnetic field is only nonzero in the boxed region. It points into the page and has strength B = 5.3 x 10-3 T. X X X X X X X X X X X X X X X X