20. Heat and Temperature
Heat Transfer
2:28 minutes
Problem 17c
Textbook Question
Textbook QuestionThe emissivity of tungsten is 0.350. A tungsten sphere with radius 1.50 cm is suspended within a large evacuated enclosure whose walls are at 290.0 K. What power input is required to maintain the sphere at 3000.0 K if heat conduction along the supports is ignored?
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