A metal sphere with radius 3.40 cm is suspended in a large metal box with interior...

 

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A metal sphere with radius 3.40 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 0.640 J/s to maintain the sphere at a constant temperature of 41.0° C. Part A What is the emissivity of the metal sphere? Γ ΑΣφ AE 圈] ? e = Part B What power input to the sphere is required to maintain it at 82.0°C ? Express your answer in watts. 1] ? H82 W Part C What is the ratio of the power required for 82.0°C to the power required for 41.0°C? ΑΣφ 画] ? H82 H41 A metal sphere with radius 3.40 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 0.640 J/s to maintain the sphere at a constant temperature of 41.0° C. Part A What is the emissivity of the metal sphere? Γ ΑΣφ AE 圈] ? e = Part B What power input to the sphere is required to maintain it at 82.0°C ? Express your answer in watts. 1] ? H82 W Part C What is the ratio of the power required for 82.0°C to the power required for 41.0°C? ΑΣφ 画] ? H82 H41