A pair of charged conducting plates produces a uniform field of 12,000 N/C,directed to the right,between the plates.The separation of the plates is 40 mm.An electron is projected from plate A,directly toward plate B,with an initial speed of v0 = 2.0 × 107 m/s.What is the speed of the electron as it strikes plate B?
,melectron = 9.11 × 10-31 kg)
A) 1.2 × 107 m/s
B) 1.5 × 107 m/s
C) 1.8 × 107 m/s
D) 2.1 × 107 m/s
E) 2.4 × 107 m/s
Correct Answer:
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