Concept explainers
(a)
The lifetime of a star; compare it with given values in Table 12.1.
(a)
Answer to Problem 38QAP
The lifetime of star is
Explanation of Solution
Write the expression for lifetime of a main sequence star.
Here,
The above expression shows that the lifetime of star is inversely proportional to the mass of main-sequence star. Greater the mass of star compared to the Sun is; less would be its lifetime.
Conclusion:
Substitute
Thus, the lifetime of star is
(b)
The lifetime of a star; compare it with given values in Table 12.1.
(b)
Answer to Problem 38QAP
The lifetime of star is
Explanation of Solution
Write the expression for lifetime of a main sequence star.
Here,
The above expression shows that the lifetime of star is inversely proportional to the mass of main-sequence star. Greater the mass of star compared to the Sun is; less would be its lifetime.
Conclusion:
Substitute
Thus, the lifetime of star is
(c)
The lifetime of a star; compare it with given values in Table 12.1.
(c)
Answer to Problem 38QAP
The lifetime of star is
Explanation of Solution
Write the expression for lifetime of a main sequence star.
Here,
The above expression shows that the lifetime of star is inversely proportional to the mass of main-sequence star. Greater the mass of star compared to the Sun is; less would be its lifetime.
Conclusion:
Substitute
Thus, the lifetime of star is
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Chapter 12 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
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- Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning