The Sun radiates like a perfect black body with an emissivity of exactly 1.       (a) Calculate the surface temperature of the Sun, given that it is a sphere with a 7.00×108-m radius that radiates 3.80×1026 W into 3-K space. (b) How much power does the Sun radiate per square meter of its surface? (c) How much power in watts per square meter is that value at the distance of Earth, 1.50×1011 m away? (This number is called the solar constant.)

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter2: The Kinetic Theory Of Gases
Section: Chapter Questions
Problem 90AP: A sealed, perfectly insulated container contains 0.630 mol of air at 20.0 and an iron stirring bar...
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The Sun radiates like a perfect black body with an emissivity of exactly 1.       (a) Calculate the surface temperature of the Sun, given that it is a sphere with a 7.00×108-m radius that radiates 3.80×1026 W into 3-K space.
 (b) How much power does the Sun radiate per square meter of its surface?
 (c) How much power in watts per square meter is that value at the distance of Earth, 1.50×1011 m away? (This number is called the solar constant.)

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