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The emissivity of tungsten is approximately 0.35. A tungsten sphere having 1 cm radius is suspended within a large evacuated enclosure whose walls are at 300 K. Find the power input required to maintain the sphere at a temperature of 3000 K if heat conduction along the support is neglected. σ=5.67×10−8 SI units. |
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Answer» The emissivity of tungsten is approximately 0.35. A tungsten sphere having 1 cm radius is suspended within a large evacuated enclosure whose walls are at 300 K. Find the power input required to maintain the sphere at a temperature of 3000 K if heat conduction along the support is neglected. σ=5.67×10−8 SI units. |
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