Consider coaxial, parallel, black disks separated a
Chapter 13, Problem 13.21(choose chapter or problem)
Consider coaxial, parallel, black disks separated a dis-tance of 0.20 m. The lower disk of diameter 0.40 m is maintained at 500 K and the surroundings are at300 K.What temperature will the upper disk of diameter0.20 m achieve if electrical power of 17.5 W is sup-plied to the heater on the back side of the disk?
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