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Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. 9 times Earth's distance from the Sun. Express your answer using two significant figures. Πν ΑΣ ? watts/m2

Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. 9 times Earth's distance from the Sun. Express your answer using two significant figures. Πν ΑΣ ? watts/m2

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Hi, I keep getting this answer incorrect. Could you please walk me through the formula and steps you take to find the answer for this? 

I would also appreciate if you would explain the units part as well, and how you would get down to just watts/m^2. 

Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. 9 times Earth's distance from the Sun. Express your answer using two significant figures. ΑΣφ ? watts/m2
Transcribed Image Text:Earth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. 9 times Earth's distance from the Sun. Express your answer using two significant figures. ΑΣφ ? watts/m2
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