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pts.) 8) Water (=1,000kg/m3,=1.3103kg/ms) is flowing from a large reservoir to a smaller one through a 5cm diameter cast iron piping system with a fully open swing check valve and two 90 standard elbows. Both reservoirs are open to the atmosphere. Determine how much higher the elevation z1 needs to be above z2 for a volumetric flow rate of 6L/s