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Water (density of 998.2 kg/m3 and a viscosity of 0.001002 Pa s) flows through a piping system into an open reservoir, as shown in the diagram. The internal diameter of the pipe is 5 cm. If the gauge pressure at point 1 is 75 kPa, calculate the elevation difference between the inlet and free surface in the reservoir for which a flow rate of 36 m3/h can …….