COLLEGE PHYSICS,V.2
COLLEGE PHYSICS,V.2
11th Edition
ISBN: 9781305965522
Author: SERWAY
Publisher: CENGAGE L
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Chapter 27, Problem 4P

(a)

To determine

The surface temperature of the sun.

(b)

To determine

The peak wavelength for the Sun.

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The radius of our sun is r = 6.96 × 108 m and its total power is 3.85 × 1026 W. The area of a sphere is A = 4πr2.a) Assuming that the surface of the Sun emits like a black body, calculate its surface temperatureb) Using the result of part (a), find λmax for the sun.
The radius of our Sun is 6.96 x 10° m, and its total power output is 3.85 x 1020 W. (a) Assuming the Sun's surface emits as a black- body, calculate its surface temperature. (b) Using the result of part (a), find Amax for the Sun.
Model the tungsten filament of a lightbulb as a black body at temperature 2 900 K. (a) Determine the wavelength of light it emits most strongly. (b) Explain why the answer to part (a) suggests that more energy from the lightbulb goes into infrared radiation than into visible light.
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