Heat transfer problem

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Question description

A radiation detector can be fabricated by cutting an angled groove in a surface. The surfaces of the groove are gray with emissivity of 0.8, and the symmetric groove makes a 60degrees angle. If the groove 1 cm deep groove is exposed to solar radiation (qsolar = 1000W/m2), what is the heat transfer from the groove required to maintain a temperature of T = 40C? (You may assume that the radiation enters the groove at 30 degrees relative to either surface.)

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(Top Tutor) Daniel C.
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