Consider a bright star in our night sky. Assume its distance from Earth is 79.5 light-years (ly) and its power output is 4.00 x 1028 W, about 100 times that of the Sun. One light-year is the distance traveled by light through a vacuum in one year. (a) Find the intensity of the starlight at the Earth. 0.00000000563 W/m² (b) Find the power of the starlight the Earth intercepts. (The radius of Earth is 6.38 x 106 m.) 2879782.023 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. MW
Consider a bright star in our night sky. Assume its distance from Earth is 79.5 light-years (ly) and its power output is 4.00 x 1028 W, about 100 times that of the Sun. One light-year is the distance traveled by light through a vacuum in one year. (a) Find the intensity of the starlight at the Earth. 0.00000000563 W/m² (b) Find the power of the starlight the Earth intercepts. (The radius of Earth is 6.38 x 106 m.) 2879782.023 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. MW
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Transcribed Image Text:Consider a bright star in our night sky. Assume its distance from Earth is 79.5 light-years (ly) and its power output is
4.00 x 1028 W, about 100 times that of the Sun. One light-year is the distance traveled by light through a vacuum in one
year.
(a) Find the intensity of the starlight at the Earth.
0.00000000563 W/m²
(b) Find the power of the starlight the Earth intercepts. (The radius of Earth is 6.38 x 106 m.)
2879782.023 X
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each
step carefully. MW
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