A metal sphere with radius 3.20 cm is suspended in a large metal box with interior walls that are maintained at 30.0°C. A small electric heater is embedded in the sphere. Heat energy must be supplied to the sphere at the rate of 0.660 J/s to maintain the sphere at a constant temperature of 41.0°C. (a) What is the emissivity of the metal sphere?
A metal sphere with radius 3.20 cm is suspended in a large metal box with interior walls that are maintained at 30.0°C. A small electric heater is embedded in the sphere. Heat energy must be supplied to the sphere at the rate of 0.660 J/s to maintain the sphere at a constant temperature of 41.0°C. (a) What is the emissivity of the metal sphere?
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Transcribed Image Text:A metal sphere with radius 3.20 cm is suspended in a large metal box with
interior walls that are maintained at 30.0°C. A small electric heater is embedded
in the sphere. Heat energy must be supplied to the sphere at the rate of 0.660 J/s
to maintain the sphere at a constant temperature of 41.0°C. (a) What is the
emissivity of the metal sphere?
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