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Light that has a 192 nm wavelength strikes a metal surface, and photoelectrons are produced moving...

Light that has a 192 nm wavelength strikes a metal surface, and photoelectrons are produced moving as fast as 0.002c.

1) What is the work function of the metal? (Express your answer to three significant figures.)

×10^−19J

2) What is the threshold wavelength for the metal above which no photoelectrons will be emitted? (Express your answer to three significant figures.)

nm

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