The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0. The temperature of the filament is 3x1000°C. What should be the length of the filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann constant is 5.670 x 10 8 W/m2 K4. Please give your answer with 3 decimal places.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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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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The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0.
The temperature of the filament is 3×1000°C. What should be the length of the
filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann
constant is 5.670 × 10-8 W/m2 · K4. Please give your answer with 3 decimal
places.
Transcribed Image Text:The filament in a light bulb has a diameter of 0.02 mm and an emissivity of 1.0. The temperature of the filament is 3×1000°C. What should be the length of the filament in meters so it will radiate 60 W of power? The Stefan-Boltzmann constant is 5.670 × 10-8 W/m2 · K4. Please give your answer with 3 decimal places.
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