Constants Part A A uniform electric field exists in the region between two oppos

Question

Constants Part A A uniform electric field exists in the region between two oppositely charged plane parallel plates. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate 1.60 cm distant from the first, in a time interval of 2.30x10-6 s Find the magnitude of the electric field Express your answer with the appropriate units EValeUnits Submit Part B Find the speed of the proton when it strikes the negatively charged plate Express your answer with the appropriate units Value Units SubmitRe equest Answer

Explanation / Answer

a) acceleratrion a = q E / m

s = u t + 1/2 a t2

x = 0 +  1/2 a t2 = 1/2 [q E / m] t2

E = 2 * x * m / q t2

= (2 * 0.016 * 1.67 * 10-27) / ( 1.6 * 10-19 * (2.3 * 10-6)2 )

= 63.14 N/C

b) v = u + a t

v = [q E / m] * t

v = (1.6 * 10-19 * 63.14* 2.3 * 10-6) / (1.67 * 10-27)

speed = 1.39 * 104 m/s

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