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Consider a bright star in our night sky. Assume its distance from Earth is 48.7 light-years (ly) and its power output is 4.00 x 1028 w, about 100 times that of the Sun. (a) Find the intensity of the starlight at the Earth. 14.995 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 x 106 m.) 7.646 Your response differs from the correct answer by more than 100%. MW

Consider a bright star in our night sky. Assume its distance from Earth is 48.7 light-years (ly) and its power output is 4.00 x 1028 w, about 100 times that of the Sun. (a) Find the intensity of the starlight at the Earth. 14.995 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 x 106 m.) 7.646 Your response differs from the correct answer by more than 100%. MW

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Consider a bright star in our night sky. Assume its distance from Earth is 48.7 light-years (ly) and its power output is 4.00 x 1028 w, about 100 times that of the Sun. (a) Find the intensity of the starlight at the Earth. 14.995 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 x 106 m.) 7.646 Your response differs from the correct answer by more than 100%. MW
Transcribed Image Text:Consider a bright star in our night sky. Assume its distance from Earth is 48.7 light-years (ly) and its power output is 4.00 x 1028 w, about 100 times that of the Sun. (a) Find the intensity of the starlight at the Earth. 14.995 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 x 106 m.) 7.646 Your response differs from the correct answer by more than 100%. MW
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