Short Answer
You would like to know if a star is coming towards you or away from you. Therefore, you will need to obtain the star's _______________ from its shifted spectra.
Correct Answer:

Verified
Correct Answer:
Verified
Q86: _ is the agitation among the molecules
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Q88: Figure 6-1<br> <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB5757/.jpg" alt="Figure 6-1
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