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Question: 

Barium has a work function of 2.48 eV. What is the maximum kinetic energy of electrons if the metal is illuminated by UV light of wavelength 365 nm? What is their speed?

Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014. Reprinted by permission of Pearson Education Inc., New York.
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Quick Answer: 

$0.92 \textrm{ eV, } 5.7 \times 10^5 \textrm{ m/s}$

Giancoli 7th Edition, Chapter 27, Problem 23

(2:20)

Chapter 27, Problem 23 is solved.

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