Problem

Air enters a 12-m-long, 7-cm-diameter pipe at 50ºC at a rate of 0.06 kg/s. The air is cool...

Air enters a 12-m-long, 7-cm-diameter pipe at 50ºC at a rate of 0.06 kg/s. The air is cooled at an average rate of 400 W per m2 surface area of the pipe. The air temperature at the exit of the pipe is

(a) 4.3ºC

(b) 17.5ºC

(c) 32.5ºC

(d) 43.4ºC

(e) 45.8ºC

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Air enters a 12-m-long, 7-cm-diameter pipe at 50ºC at a rate of 0.06 kg/s. The air is cool...

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