In a cathode ray tube, electrons are accelerated from rest through a potential difference in an electron gun arrangement. (a) Should the left side of the gun be at (1) a higher, (2) an equal, or (3) a lower potential than the right side? Why? (b) If the potential difference in the gun is 10 kV, what is the A????1muzzle speedA????1 of the electrons emerging from the gun? (c) If the gun is directed at a screen 35 cm away, how long does it take the electrons to reach the screen?