Question: Hot water at 90C enters a 15-m section of a cast iron pipe whose inner diameter is 4 cm at an average velocity of 0.8

Hot water at 90°C enters a 15-m section of a cast iron pipe whose inner diameter is 4 cm at an average velocity of 0.8 m/s. The outer surface of the pipe is exposed to the cold air at 10°C in a basement. If water leaves the basement at 88°C, determine the rate of heat loss from the water.

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