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7.6. Air at 300C and 130 kPa flows through a horizontal 7-cm ID pipe at a velocity of 42.0 m/s. (a) Calculate Ex(W), assuming

7.6. Air at 300C and 130 kPa flows through a horizontal 7-cm ID pipe at a velocity of 42.0 m/s. (a) Calculate Ex(W), assuming ideal-gas behavior. (b) If the air is heated to 400C at constant pressure, what is AE = E (400C) - k (300C)? (c) Why would it be incorrect to say that the rate of transfer of heat to the gas in Part (b) must equal the rate of change of kinetic energy?

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