Concept explainers
(a)
The critical density of the matter in the universe
(a)
Answer to Problem 41Q
Solution:
Explanation of Solution
Given data:
The Hubble constant is
Formula used:
The relation between the Hubble constant and the critical density is:
Here,
Explanation:
The conversion process of a unit of Hubble constant from
Recall the relation between the Hubble constant and the critical density.
Substitute
Conclusion:
Therefore, the critical density of matter is
(b)
The critical density of the matter in the universe
(b)
Answer to Problem 41Q
Solution:
Explanation of Solution
Given data:
Hubble constant is
Formula used:
The relation between Hubble constant and the critical density is:
Here,
Explanation:
The conversion process of unit of Hubble constant from
Recall the relation between the Hubble constant and the critical density.
Here,
Substitute
Conclusion:
Therefore, the critical density of matter is
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Chapter 25 Solutions
Universe
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