In the figure, an electron is shot with an initial speed of 1400 m/s from plate A to plate B, where it arrives with a speed of 700 m/s. The plate separation is d = 0.0500 m. What is the magnitude (N/C) of the electric field between the two plates, which is perpendicular to the plates? An electron has mass 9.11×10−31 kg. 6.91×10−6 1.23×10−5 2.56×10−5 5.04×10−3 8.37×10−5 7.67×10−5 1.25×10−5 3.90×10−6 8.12×10−4 7.29×10−6