What is the surface temperature of a star that has a radius of 7.00 x 108 m and emits power at a rate of 5.00 x 1026 watts? Assume that the star is an ideal blackbody and that the temperature of the surrounding region of outer space is 0.000 K. (Hint: σ = 5.67 x 10-8 watts/m2K4 ,and the surface area of a sphere is A = 4πR2.) a. 5,200 K b. 5430 K c. 5,050 K d. 5820 K e. 6,150 K

What is the surface temperature of a star that has a radius of 7.00 x 108 m and emits power at a rate of 5.00 x 1026 watts? Assume that the star is an ideal blackbody and that the temperature of the surrounding region of outer space is 0.000 K. (Hint: σ = 5.67 x 10-8 watts/m2K4 ,and the surface area of a sphere is A = 4πR2.) a. 5,200 K b. 5430 K c. 5,050 K d. 5820 K e. 6,150 K

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 11OQ: Star A has twice the radius and twice the absolute surface temperature of star B. The emissivity of...

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Star A has twice the radius and twice the absolute surface temperature of star B. The emissivity of both stars can be assumed to be 1. What is the ratio of the power output of star A to that of star B? (a) 4 (b) 8 (c) 16 (d) 32 (e) 64
The amount of radiant power produced by the sun is approximately 3.9 × 1026 W. Assuming the sun to be a perfect blackbody sphere with a radius of 6.96 × 108 m, find its surface temperature (in kelvins).
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