An energy of W = 83 J is emitted from the surface of a

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An energy of W = 83 J is emitted from the surface of a carbon black with an area S = 2 cm2 at a temperature of T = 400 K for a time t = 5 min. Determine the coefficient of thermal radiation aT of carbon black.

Task 50401. Detailed solution with a brief record of the conditions, formulas and laws used in the decision, the conclusion of the calculation formula and the answer.
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