20. Heat and Temperature
Heat Transfer
5:57 minutes
Problem 19.66
Textbook Question
Textbook Question(I) (a) How much power is radiated by a tungsten sphere (emissivity e = 0.35) of radius 19 cm at a temperature of 25°C? (b) If the sphere is enclosed in a room whose walls are kept at - 5 °C, what is the net flow rate of energy out of the sphere?
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