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Asked Dec 25, 2019
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Star A has twice the radius and twice the absolute temperature of star B. What is the ratio of the power output of star A to that of star B? The emissivity of both stars can be assumed to be 1. (a) 4 (b) 8 (c) 16 (d) 32 (e) 64

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Power output is directly proportional to the surface area of star. Surface area is directly proportional to the square of radius. It means that power output is directly ...

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P, RT (2R, )^(27, )* в1в = 64 P = 64P;

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