Exam 2 review

Exam 2 review - Back to the photoelectric effect A) Both...

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A) Both blue and green light eject electrons from the surfact of potassium. In which case do the ejected electrons have the higher average kinetic energy? B) When an intense bean of green light is directed onto a copper surfact, no electrons are ejected. What would happen if the green light is replaced with red light? Back to the photoelectric effect
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An electron is accelerated through an electric potential to a kinetic energy of 18.6 keV. What is its characteristic wavelength? me = 9.11 x 10-28 g; 1 eV = 1.60 x 10-19 J Q6.88
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Q6.79: CD question A semiconductor laser in a CD play has an output wavelength of 780 nm and a power level of 0.10 mW (where 1 W = 1 J/s). How many photons strike the CD surface during the playing of a cd that is 69 minutes in length?
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Given the following specific heats of metal: Metal Specific Heat (J/g oC) Manganese 0.477 Sodium 1.225 Strontium 0.301 Aluminum 0.899 Beryllium 1.823 If the same amount of heat is added to Specifically, about specific heat
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This note was uploaded on 04/05/2012 for the course CHEM 101 taught by Professor Farahh during the Spring '02 term at UNC.

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Exam 2 review - Back to the photoelectric effect A) Both...

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