A beam of electrons is initially moving along the negative x-axis at 9.18 Mm/s in the positive x-direction. At x = 0 it enters a region where a uniform 1.86-mT magnetic field points in the positive y-direction. The region begins on the y−z plane and extends indefinitely in the x-direction. Find the maximum distance the beam penetrates into the region.

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.