College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Wien's displacement law
Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the…
Question
1. What is the wavelength of a radio photon from an AM radio station that broadcasts at 1470 kilohertz?
Express your answer to three significant figures and include the appropriate units.
 
2. What is the energy of a radio photon from the same station?
Express your answer to three significant figures and include the appropriate units.
 
For question 1 I am not sure how to solve it because the frequency is in kilohertz and I don't know how to convert it into something that I can use. 
For the speed of light in this question, would it be best to use 3 x 10^8 m/s or 3 x 10^5 km/s? 
 
For question 2 I have the formula to use, I'm just uncertain of how to use it. 
E = hxf = photon energy h = 6.626 x 10-34 joule x s Planck's %3D constant
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Transcribed Image Text:E = hxf = photon energy h = 6.626 x 10-34 joule x s Planck's %3D constant
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