An electron starts from rest at tone plate of a parallel-plate capacitor and accelerates to the other plate. The plate separation is 2mm, and it takes 1ms for the electron to travel from one side to the other. What is the capacitance of this capacitor if there are 2C of charge stored on the plates? m = 9.11 x 10^-31kg, e=1.6 x 10^-19C. The answer is 4.4 x 10^10 F but I can't seem to arrive at same answer. Please Help.