A large flat metal surface has a uniform charge density . An electron of mass m and charge e
leaves the surface at point A with speed u, and returns to it at point B. Disregard gravity. The
maximum value of AB is
A large flat metal surface has a uniform charge density . An electron of mass m and charge e
leaves the surface at point A with speed u, and returns to it at point B. Disregard gravity. The
maximum value of AB is
leaves the surface at point A with speed u, and returns to it at point B. Disregard gravity. The
maximum value of AB is











