2. The cold-water faucet in a house feeds from a water main where the pressure is 3 bar. The system consists of 50 m of 15-mm ID galvanized pipes, three 90° standard elbows, a fully opened gate valve, and a faucet. The faucet can be modeled by considering it to be a con-

ventional globe valve followed by a nozzle with an ID of 8 mm. If the water is at 15°C find the flow rate through the faucet.