An electron with an initial speed of 1.0 x 105 m/s encounter…
An electron with an initial speed of 1.0 x 105 m/s encounters an electric field of 55,000 N/C, which points in the opposite direction of the electron initial velocity. How far has the electron traveled, in mm (mili-meters), when the electron’s speed reaches 2.0 x 106 m/s? Answer to three significant digits. Note that 1 meter = 1000 mm and e = 1.60 × 10-19C, k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2, and mel = 9.11 × 10-31 kg.