Question: Q 3 . Two black Plates at 9 0 0 C and 4 0 0 C and exchange heat by rafiation. Calculate the heat transfer

Q3. Two black Plates at 900C and 400C and exchange heat by rafiation. Calculate the heat transfer per unit area
Q 3 . Two black Plates at 9 0 0 C and 4 0 0 C and

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