Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 19, Problem 51Q
To determine

The observations that predict whether the primary source of a star’s energy is hydrogen fusion or helium fusion.

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What observations would you make of a star to determine whether its primary source of energy is hydrogen fusion or helium fusion?
A star with a radius 1.5 times that of the Sun has a surface temperature T=9,000 K. Calculate the luminosity of this star and express your answer in units of the Solar luminosity
What did you calculate for the radius of the star that had a temperature of 5880 degrees Kelvin and a luminosity of 78 ?
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