The frequency of light reaching Earth from a particular galaxy
is 18% lower than the frequency...
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Physics
The frequency of light reaching Earth from a particular galaxyis 18% lower than the frequency the light had when it was emitted.a) explain whether the galaxy is moving toward or away from earth.b) What is the speed of this galaxy relative to the Earth? Giveyour answer as a fraction of the speed of light.
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a So the first equation you should remember is c LF where c speed of light F frequency and L Wavelength Now that you know that you can relate wavelength to frequency since c is constant If F decreases so does cL therefore L must increase Okay so we now know that we are observing a longer
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