Multiple Choice
Light of wavelength 661.1 nm is received from a star that is emitting light of wavelength 659.6 nm. How fast is the star moving relative to the Earth, and is it moving toward or away?
A) 580 km/s away
B) 580 km/s toward
C) 680 km/s away
D) 680 km/s toward
Correct Answer:
Verified
Correct Answer:
Verified
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