If the sphere is enclosed in a room whose walls are kept
(a) How much power is radiated by a tungsten sphere (emissivitye = 0.35) of radius 20 cm at atemperature of 26°C?
W
(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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a how much power is radiated by a tungsten sphere emissivitye 035 of radius 20 cm at atemperature of 26degcwb if the
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