Maddi3Ski17
Maddi3Ski17 Maddi3Ski17
  • 25-05-2017
  • Social Studies
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The observed frequency increases when the source and observer approach each other and decreases when they move apart. This is called the what?

1) emission spectrum
2) Doppler effect
3) wavelength

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bigdog10437 bigdog10437
  • 25-05-2017
2) Doppler effect is what a observer decreases.
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