Consider a bright star in our night sky assume its distance, Physics

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Consider a bright star in our night sky assume its distance

Consider a bright star in our night sky. Assume its distance from Earth is 45.9 light-years (ly) and its power output is 4.00 multiply.gif 1028 W, about 100 times that of the Sun.

(a) Find the intensity of the starlight at the Earth.

nW/m2

(b) Find the power of the starlight the Earth intercepts. One light-year is the distance traveled by the light through a vacuum in one year. (The radius of Earth is 6.37 multiply.gif 106 m.)

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Physics: Consider a bright star in our night sky assume its distance

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Reference No:- TGS0638504

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