The star sirius has a surface temperature of 9750 k and, Ask an Expert

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The star Sirius has a surface temperature of 9750 K and aradius 2.4 times larger than the Sun's.

a) What is the ratio of the flux (energy per square meter persecond) emitted from the surface of Sirius to the flux emittedfrom the surface of the Sun?

b) What is the ratio of the luminosity of Sirius to the luminosity of the Sun?

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