An object with a surface area of 45.0 cm2 and an emissivity of 0.9 is in a vacuum surrounded by an enclosure with a temperature of 20°C. If the object radiates 300 W of power, v is the surface temperature of the object? (Stefan-Boltzmann's constant is o = 5.669 x 10-8 W/m² K4). A) 698 K B) 1071 K C) 1415 K D) 765 K
An object with a surface area of 45.0 cm2 and an emissivity of 0.9 is in a vacuum surrounded by an enclosure with a temperature of 20°C. If the object radiates 300 W of power, v is the surface temperature of the object? (Stefan-Boltzmann's constant is o = 5.669 x 10-8 W/m² K4). A) 698 K B) 1071 K C) 1415 K D) 765 K
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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Transcribed Image Text:An object with a surface area of 45.0 cm2 and an emissivity of 0.9 is in a vacuum surrounded by an enclosure with a temperature of 20°C. If the object radiates 300 W of power, what
is the surface temperature of the object? (Stefan-Boltzmann's constant is o = 5.669 x 10-8 W/m2 K4).
A) 698 K
B) 1071 K
С) 1415 K
D) 765 K
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