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16-01-2024
Physics

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Air at 25 oC blows over a heated steel plate with its surface maintained at 200 C. The plate is 50 x 40 cm and 2.5 cm thick. The convective heat-transfer coefficient at the top surface is 20 W/(m² K). The thermal conductivity of steel is 45 W/(m K).

a. Calculate the heat loss per hour from the top surface of the plate.

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