Question: An electron (mass m = 9.11 X 10-31lg) is accelerated in the uniform field E (E = 1.45 X 104N/C) between two parallel charged plates.

An electron (mass m = 9.11 X 10-31lg) is accelerated in the uniform field E (E = 1.45 X 104N/C) between two parallel charged plates. The separation of the plates is 1.10cm. The electron is accelerated from rest near the negative plate and passes through a tiny hole in the positive plate, Fig. 16-60.
(a) With what speed does it leave the hole?
(b) Show that the gravitational force can be ignored.

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