Question: Find the surface emissivity when: net radiative heat exchange is 94 W, the area of radiative surface is 12 m^2, the hot temp. is 321

Find the surface emissivity when: net radiative heat exchange is 94 W, the area of radiative surface is 12 m^2, the hot temp. is 321 K, and the cold temp. is 288 K.

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