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April 20, 2014

Homework Help: Physics

Posted by genius on Wednesday, May 2, 2012 at 8:16pm.

Electrons are ejected from a metallic surface with speeds ranging up to 4.50x10^5 m/s when light with a wavelength of 615nm is used. (a) What is the work function of the metal? (b) What is the cutoff frequency for this surface?

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