Concept explainers
(a)
Total power output of the Sun.
(a)
Answer to Problem 61GP
The total power output is
Explanation of Solution
Given:
Rate of energy,
Formula used:
Power output can be given as:
Calculation:
Distance between the Earth and the Sun is
Substituting all the values, in the above formula:
Conclusion:
Hence, the total power output is
(b)
Number of protons consumed per second in the reaction.
(b)
Answer to Problem 61GP
The number of protons per second is
Explanation of Solution
Given:
Rate of energy,
Calculation:
Energy released for the reaction in eq 31-7,
So, the number of protons per second is:
Conclusion:
Thus, the number of protons per second is
(c)
Time taken by the Sun to glow at its present rate.
(c)
Answer to Problem 61GP
The time taken by the Sun to glow at its present rate will be
Explanation of Solution
Given:
Rate of energy,
Mass of Sun,
Calculation:
The time taken can be calculated as follows:
Conclusion:
Hence, the time taken by the Sun to glow at its present rate will be
Chapter 31 Solutions
Physics: Principles with Applications
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