A solid metal sphere is 15.0 cm in diameter and has surface of uniform color.When its surface is at 112°C,you measure that it radiates energy at a rate of 71.3 W.What is the emissivity of the surface of this object? Any heat that enters the sphere from the outside environment is negligible.The Stefan-Boltzmann constant is

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The Answer of A solid metal sphere is 15.0 cm in diameter and has surface of uniform color.When its surface is at 112°C,you measure that it radiates energy at a rate of 71.3 W.What is the emissivity of the surface of this object? Any heat that enters the sphere from the outside environment is negligible.The Stefan-Boltzmann constant is

A Solid Metal Sphere Is 15