andreselbravo1 andreselbravo1
  • 03-07-2020
  • Geography
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I’ll mark brainlist for the correct answer

Ill mark brainlist for the correct answer class=

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fwanah
fwanah fwanah
  • 04-07-2020
the answer is B. The Doppler Effect is used to calculate the velocity (speed) of something. Astronomers use it to see how fast stars and galaxies are moving away from us.
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MrSmart200020
MrSmart200020 MrSmart200020
  • 29-07-2020
B because it states a lot about the Doppler effect
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