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5. When heating a metal rod, it initially does not change colour but radiates heat. A continues, the metal rod starts to glow red and then white. Explain these observati erms of Wien's Law.

5. When heating a metal rod, it initially does not change colour but radiates heat. A continues, the metal rod starts to glow red and then white. Explain these observati erms of Wien's Law.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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5. When heating a metal rod, it initially does not change colour but radiates heat. As heating starts to glow red and then white. Explain these observations in continues, the metal rod terms of Wien's Law. S Spes
Transcribed Image Text:5. When heating a metal rod, it initially does not change colour but radiates heat. As heating starts to glow red and then white. Explain these observations in continues, the metal rod terms of Wien's Law. S Spes
3. A graph of the intensity of all the different wavelengths emitted by the Sun looks like this: 2.5 W m²nm Spectral Irradiance 2.0 1.5 1.0 0.5 0.0 UM visible Infrared 1000 Solar Spectrum outside atmosphere tallinenkbuciana 2000 wavelength (nm) a. What term is used to describe a body that emits radiation with a variation in intensity following the same general shape as the above graph? b. Using Wien's Law, Amax = 2.900x10 Km/T, calculate the temperature of the Sun. Remember that Amax is the most strongly radiated type of energy in the graph above and that the SI unit for temperature is Kelvin.
Transcribed Image Text:3. A graph of the intensity of all the different wavelengths emitted by the Sun looks like this: 2.5 W m²nm Spectral Irradiance 2.0 1.5 1.0 0.5 0.0 UM visible Infrared 1000 Solar Spectrum outside atmosphere tallinenkbuciana 2000 wavelength (nm) a. What term is used to describe a body that emits radiation with a variation in intensity following the same general shape as the above graph? b. Using Wien's Law, Amax = 2.900x10 Km/T, calculate the temperature of the Sun. Remember that Amax is the most strongly radiated type of energy in the graph above and that the SI unit for temperature is Kelvin.
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