Concept explainers
(a)
The value of
(a)
Answer to Problem 53Q
Solution:
Explanation of Solution
Given data:
The value of the redshift is 0.5.
Using table 25-2, the value of
The formula for the deceleration parameter at redshift z is
Formula used:
The given formula is written as,
Here,
Explanation:
Recall the provided formula.
Substitute 0.5 for z and 0.76 for
Conclusion:
Therefore, the value of
(b)
The value of
(b)
Answer to Problem 53Q
Solution:
0.074
Explanation of Solution
Given data:
The value of the redshift is 1.
Using table 25-2, the value of
Formula used:
The provided formula is written as:
Here,
Explanation:
Recall the provided formula.
Substitute 1 for z and 0.76 for
Conclusion:
Therefore, the value of
(c)
An explanation for the result that shows that the expansion of the universe was decreasing at
(c)
Explanation of Solution
Given data:
The values of the redshift are 1 and 0.5.
Using table 25-2, the value of
Formula used:
The provided formula is written as:
Here,
Explanation:
The value of
A positive value of
Conclusion:
Therefore, the universe accelerated between redshift 1 and 0.5.
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Chapter 25 Solutions
Saplingplus For Freedman's Universe (single Term Access)
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