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Engineering, 16.01.2020 04:31 muziqbox594

Consider coaxial, parallel, black disks separated a distance of 0.20 m. the lower disk of diameter 0.40 m is maintained at 500 k and the surroundings are at 300 k. what temperature will the upper disk of diameter 0.20 m achieve if electrical power of 17.5 w is supplied to the heater on the back side of the disk?

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