HomeworkLE ld Problem 17.33 -Enhanced with Solution Problem 17.33-Enhanced-with

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HomeworkLE ld Problem 17.33 -Enhanced with Solution Problem 17.33-Enhanced-with Solution Part A A uniform electric field exists in the region between two oppositely charged plane parallel plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 3.10 cm distant from the first, in a time interval of 2.10x108 s Find the magnitude of this electric field You may want to review (page5537-539) E 1.467 106 N/C For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Accelerating an electron. Submit My Answers Give Up Incorrect; Try Again; 9 attempts remaining Part B Find the speed of the electron when it strikes the second plate m/s Submit My Answers Give Up ype here to search

Explanation / Answer

here,

initial speed , u = 0 m/s

s = 0.031 m

time taken, t = 2.1 * 10^-8 s

let the accelration be a

s = 0 + 0.5 * a * t^2

0.031 = 0 + 0.5 * a * (2.1*10^-8)^2

a = 1.4 * 10^14 m/s^2

A)

the magnitude of electric feild , E = m * a /e

E = 9.1 * 10^-31 * 1.4 * 10^14 /( 1.6 * 10^-19) N/C

E = 800 N/C

B)

the speed of electron , v = 0 + a * t = 2.94 * 10^6 m/s

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