Pure water flows through the cross section of the pipe 0.3m long and 3cm in diameter. The water entering the pipe has a flow rate of 373 K, 0.2 MPa to 2 kg/s. The discharged water also has a flow rate of 2 kg/s. At this time, the temperature is 373 K and the pressure is 0.195 MPa. Under this condition, the density of water is 961.5 kg/cm3. Find what was done at the entrance and exit of the

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