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The Physical Universe Q10 / T6 (lifesaver)

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Date Posted: 7/24/2008 9:29:05 AM  Status: Live
The Physical Universe Q10 / T6 (lifesaver)
Course Textbook Chapter Problem
N/A The Physical Universe Konrad B. Krauskopf Arthur Beiser T6 10
Question Details:
 

10. What is the source of the sun’s energy?

A. Burning of carbon

B. Gravitational collapse

C. Conversion of hydrogen into helium

D. Chemical reactions
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Date Posted: 7/24/2008 9:48:40 AM  Status: Live
Asker's Rating: Lifesaver   
Response:
Answer: C

At this stage in the sun's stellar evolution, nuclear processes (thermonuclear fusion of H atoms into He-4 atoms) provides immense energy to provide outward pressure (hydrostatic equilibrium) to balance against gravitational collapse.





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