2). a). An electron and a proton are each placed at rest in an electric ?eld of 334 N/C. What is the velocity of the electron 46.2 ns after being released? Consider the direction parallel to the field to be positive. The fundamental charge is 1.602 × 10^?19 C and the mass of an electron is 9.109 × 10^?31 kg .
b). What is the velocity of the proton 46.2 ns after being released? The mass of the proton is 1.6726 × 10^?27 kg.