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18-17 Metal plates (k (k = 180 W/mK, p = 2800 kg/m, and Cp = 880 J/kg K) with a thickness of 1 cm

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18-17 Metal plates (k (k = 180 W/mK, p = 2800 kg/m, and Cp = 880 J/kg K) with a thickness of 1 cm are being heated in an oven for 2 min. Air in the oven is maintained at 800C with a convection heat transfer coefficient of 200 W/mK. If the initial temperature of the plates is 20C, determine the temperature of the plates when they are removed from the oven.

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