Concept explainers
(a)
The wavelength of the sodium line emitted from galaxies.
(a)
Answer to Problem 41P
The wavelength of the sodium line emitted from galaxies is
Explanation of Solution
Write the expression for velocity from Hubble’s law.
Here,
Write the expression for the wavelength by using equation (I).
Here,
Conclusion:
Substitute,
Thus, the wavelength of the sodium line emitted from galaxies is
(b)
The wavelength of the sodium line emitted from galaxies.
(b)
Answer to Problem 41P
The wavelength of the sodium line emitted from galaxies is
Explanation of Solution
Write the expression for velocity from Hubble’s law.
Here,
Write the expression for the wavelength by using equation (I).
Here,
Conclusion:
Substitute,
Thus, the wavelength of the sodium line emitted from galaxies is
(c)
The wavelength of the sodium line emitted from galaxies.
(c)
Answer to Problem 41P
The wavelength of the sodium line emitted from galaxies is
Explanation of Solution
Write the expression for velocity from Hubble’s law.
Here,
Write the expression for the wavelength by using equation (I).
Here,
Conclusion:
Substitute,
Thus, the wavelength of the sodium line emitted from galaxies is
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Chapter 31 Solutions
Principles of Physics
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