42. An electron moving at a speed of 50 ∙ 106 m / s flies into the space between the plates of a flat capacitor. The distance between the plates is 0.3 cm, the length is 1 cm. A voltage of 60 V is applied to the capacitor. How much will the electron speed increase at the output of the capacitor compared to the initial speed

Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)