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Question: 4water flows from the basement of a house up to...

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4Water flows from the basement of a house up to the second floor, an elevation change of 6 m, as shown in Figure Q4. The water flows through copper pipe of diameter 1.9 cm at a flow rate of Q 45 L/min and exits through a faucet of diameter 1.3 cm Data density of water: p-1000 kg/m dynamic viscosity of water: u- 0.001 Ns/m copper-pipe roughness: k= 1.5 μm ravitational constant: g-9.81 m/s 11-10% m/s Loss coefficients: 90° elbow Ki1.5; glove valve KL 10; faucet KL-2 2 based on 3m pipe velocity 1.9cm-diameter copper pipe 3m Wide open 1.5m globe valve KL = 10 1.3cm diameter 3m Q = 45 L/min Figure Q4 Pressure-? (1) Threaded 90° elbows K, = 1.5 each 4.6m Determine the pressure at point (1) if: (a) all losses are neglected (b) the only losses are due to friction (no minor losses) (c) all losses are included (friction, pipe-bends, valves etc.) [5 marks] [10 marks] [10 marks]

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