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A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm deg C s. How much energy is

A steam pipe is covered with 1.50-cm thick insulating material of thermal conductivity of 0.200 cal/cm · deg C · s. How much energy is lost every second when the steam is at 160deg C and the surrounding air is at 20.0deg C? The pipe has a circumference of 800 cm and a length of 49.0 m. Neglect losses through the ends of the pipe.

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