Concept explainers
The speed with which the galaxy is moving away from Earth.
Answer to Problem 54A
Explanation of Solution
Given:
The actual
The observed wavelength of the light from hydrogen,
Formula used:
Doppler effect: The difference between the observed
Where
Now, if the observer and the source are moving away from each other, then the observed wavelength is,
And, if the observer and the source are approaching each other, then the observed wavelength is,
Calculation:
The speed of light is known as,
Thus for the given case, using the given values in above formula,
Conclusion:
Hence, the velocity with which the galaxy moves away from the Earth is
Chapter 16 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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