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A Star Whose Temperature Is 8000 K Has a Peak

Question 111

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A star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien'sLaw. If the star is in the Andromeda Galaxy, which is moving towards us at about 402,000km/hour, what would an observer on Earth see as the peak wavelength for this star (show yourwork, and use c = 300,000 km/s)?

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The Doppler Effect says that the apparen...

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