Concept explainers
(a)
The average lifetime of a technologically advanced civilization by using the Drake equation, if there are 1000 civilizations present in the galaxy, using the standard values given in the text for the parameters in the equation.
(a)
Answer to Problem 20Q
Solution:
Explanation of Solution
Given data:
There are 1000 civilizations in the galaxy.
Formula used:
Write the Drake equation.
Here,
Explanation:
The standard values considered by the astronomers are given in the book. The value of
Recall the Drake equation.
Rearrange the expression in terms of
Substitute, 1 for
Conclusion:
The average lifetime of a technologically advanced civilization, calculated using the drake equation, if there are 1000 civilizations present in the galaxy, is
(b)
The average lifetime of a technologically advanced civilization by using the Drake equation, if there are
(b)
Answer to Problem 20Q
Solution:
Explanation of Solution
Given data:
There are
Formula used:
Write the Drake equation.
Here,
Explanation:
The standard values considered by the astronomers are given in the book. The value of
Recall the Drake equation.
Rearrange the expression in terms of
Substitute1 for
Conclusion:
The average lifetime of a technologically advanced civilization, calculated using the Drake equation, if there are
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Chapter 27 Solutions
Universe
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