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anonymous
 one year ago
Suppose you observe light from a distant galaxy with a diffraction grating and find the angle at which the grating produces maximum intensity corresponding to light emitted by heated sodium. Which of these would show that the galaxy is moving away from the earth?
A. One of the two yellow lines disappears.
B. The two yellow lines are unshifted.
C. The two yellow lines are shifted toward a direction corresponding to a longer wavelength.
D. The two yellow lines are shifted toward a direction corresponding to a shorter wavelength.
anonymous
 one year ago
Suppose you observe light from a distant galaxy with a diffraction grating and find the angle at which the grating produces maximum intensity corresponding to light emitted by heated sodium. Which of these would show that the galaxy is moving away from the earth? A. One of the two yellow lines disappears. B. The two yellow lines are unshifted. C. The two yellow lines are shifted toward a direction corresponding to a longer wavelength. D. The two yellow lines are shifted toward a direction corresponding to a shorter wavelength.

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1I think C since if the galaxy is going away, we observe a decresing of frequency, so an increasing of wavelength

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh okay!! thank you:)
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