An electron of mass 9.11 x 10 3 kg has an initial speed of 2.40 x 103 m/s. It travels in a straight line, and its speed increases to 6.60 x 103 m/s in a distance of 5.20 cm. Assume its acceleration is constant. (a) Determine the magnitude of the force exerted on the electron. X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. N (b) Compare this force (F) with the weight of the electron (F.), which we ignored. x Your response differs from the correct answer by more than 10%. Double check your calculations