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Question: 

What is the speed of an electron whose kinetic energy is 1.12 MeV?

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 

$0.950c$

Giancoli 7th Edition, Chapter 26, Problem 28

(2:22)

Chapter 26, Problem 28 is solved.

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