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(Solved by Expert Tutors) Refine the calculation of the life expectancy of the Sun by considering


hat hydrogen fusion in the Sun occurs only in its core and that the density of the core is greater than the bulk density of the Sun as a whole.
a). Calculate the mass of the core of the Sun given that its radius is140,000 km and that its density is 150 g/cm3.
b). Calculate the number of hydrogen atoms in the core of the Sun as summing that its concentration is 74% by weight.
c) Estimate how much time in years is required to convert all of the hydrogen in the core of the Sun into helium.
d) How does this result compare to the accepted life expectancy of the Sun and consider possible reasons for the discrepancy?
Life expectancy of the Sun ~ 10 ? 109 y

 


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Apr 19, 2020

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