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Q: Given is steady isothermal flow of water at 20°C through the device in Fig. Heat-transfer, gravity, and temperature effects are negligible. Known data are D1 = 9 cm, Q1 = 220 m3/h, p1 = 150 kPa, D2 = 7 cm, Q2 = 100 m3/h, p2 = 225 kPa, D3 = 4 cm, and p3 = 265 kPa. Compute the rate of shaft work done for this device and its direction
