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Question: a cylindrical rod made of platinum conductivity 72 wmk...

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A cylindrical rod made of platinum (conductivity = 72 W/m·K) is 9 mm in diameter and 39 mm in length. Temperatures at the two ends are 157 °C and 17 °C, respectively. The side surface is thermally insulated. What is the rate of heat transfer through this rod in W?

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