Answer:
So, if a star is moving towards Earth, it appears to emit light that is shorter in wavelength compared to a source of light that isn't moving. ... In contrast, the light from a star moving away from us seems to shift towards longer wavelengths. As this is towards the red end of the spectrum, astronomers call it redshift.
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Answer:
I'm sorry what do you mean
Answer: C. 2[(b+3) + b] = 26 which has one solution
Since our equation has one solution only, we can conclude that the correct answer is: C. 2[(b+3) + b] = 26 which has one solution.
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