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An enclosure has an inside area of 50 m², and its inside surface is black and is maintained at a constant temperature. A small opening in the enclosure has an area of 0.03 m². The radiant power emitted from this opening is 48 W. What is the temperature of the interior enclosure wall, in K? If the interior surface is maintained at this temperature, but is now polished so that its emissivity is 0.15, what will be the value of the radiant power emitted from the opening, in W?

An enclosure has an inside area of 50 m², and its inside surface is black and is maintained at a constant temperature. A small opening in the enclosure has an area of 0.03 m². The radiant power emitted from this opening is 48 W. What is the temperature of the interior enclosure wall, in K? If the interior surface is maintained at this temperature, but is now polished so that its emissivity is 0.15, what will be the value of the radiant power emitted from the opening, in W?

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An enclosure has an inside area of 50 m², and its inside surface is black and is maintained at a constant temperature. A small opening in the enclosure has an area of 0.03 m². The radiant power emitted from this opening is 48 W. What is the temperature of the interior enclosure wall, in K? If the interior surface is maintained at this temperature, but is now polished so that its emissivity is 0.15, what will be the value of the radiant power emitted from the opening, in W? T, = grad = K W
Transcribed Image Text:An enclosure has an inside area of 50 m², and its inside surface is black and is maintained at a constant temperature. A small opening in the enclosure has an area of 0.03 m². The radiant power emitted from this opening is 48 W. What is the temperature of the interior enclosure wall, in K? If the interior surface is maintained at this temperature, but is now polished so that its emissivity is 0.15, what will be the value of the radiant power emitted from the opening, in W? T, = grad = K W
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