an electron is to be accelerated from a velocity of 3.50×10^6 m/s to a velocity of 7.00×106 m/s . through what potential difference must the electron pass to accomplish this? (V1-V2 = ? v)
(b) Through what potential difference must the electron pass if it is to be slowed from 7.00 x 10^6 m/s to a halt?
