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Unformatted text preview: Version PREVIEW Hw11 Ross (10219) 1 This printout should have 19 questions. Multiplechoice questions may continue on the next column or page find all choices before answering. Serway CP 27 07 001 10.0 points An FM radio transmitter has a power output of 132 kW and operates at a frequency of 106 . 8 MHz. How many photons per second does the transmitter emit? Plancks constant is 6 . 62607 10 34 J s. Correct answer: 1 . 86529 10 30 . Serway CP 27 11 002 (part 1 of 3) 10.0 points When light of wavelength 376 nm falls on a potassium surface, electrons are emitted that have a maximum kinetic energy of 1 . 69 eV. What is the work function of potassium? The speed of light is 3 10 8 m / s and Plancks constant is 6 . 63 10 34 J s . Correct answer: 1 . 61618 eV. 003 (part 2 of 3) 10.0 points What is the cutoff wavelength of potassium? Correct answer: 769 . 173 nm....
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This note was uploaded on 12/01/2010 for the course PHYSICS 21900 taught by Professor Rhoads during the Spring '10 term at IUPUI.
 Spring '10
 Rhoads
 Physics, Power

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