Determine the longest-wavelength light
The fact that photons hitting a metal will release electrons is the quintessence of the photoelectric effect. When the minimum energy needed to free a photoelectron from sodium is 1.8 eV, determine the longest-wavelength light which must be used?
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Calculate the change in the internal energy of the system? A system receives 174 J of heat and delivers 2,151 J of work to its surroundings.
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