98. at 2 • 107 m / s electron enters the space between the capacitor plates in the middle of the gap in a direction parallel to the plates. When a minimum potential difference across the plates of the electron does not depart from the condenser, the condenser when the length 10 cm, and the distance between its plates 1 cm?

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