An electron with a speed of 5.16 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude2.16 × 103 N/C, traveling along a field line in the direction that retards its motion.
(a) Compute how far will the electron travel in the field before stopping momentarily?
(b) Determine how much time will have elapsed?
(c) If the region containing the electric field is 5.83 millimeter long (too short for the electron to stop within it), find what fraction of the electron initial kinetic energy will be lost in that region?