The brightest star in the northern celestial hemisphere has a surface temperature of about 4300 K...
The brightest star in the northern celestial hemisphere has a surface temperature of about 4300 K and it is 170 times more luminous than the Sun. Calculate the radius of the star in units of the radius of the solar radius (round the result to the nearest integer)
In the calculation, you may assume that the Sun has a radius of 7E8 meters and a luminosity of 3.8E26 watts.
Homework Answers
![From stefans Law, power radiated Po [47R] TY Pstar = 170 PSUN 2 170 X 3.8 x 10 Pston 170x3.8x128 - 5.69x108 [SAR] [4300] -](http://img.homeworklib.com/questions/88dc2820-404c-11eb-a80c-a58e1898f0db.png?x-oss-process=image/resize,w_560)
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The brightest star in the northern celestial hemisphere has a
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