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Two reservoirs have a difference in height of 10 meters at the free surface. They are...

Two reservoirs have a difference in height of 10 meters at the free surface. They are connected by two pipes in series; the first tube is 20 m long and has a diameter of 6 cm. The second tube is 10 meters long with a diameter of 10 cm. At the change in tubes, an expander (θ = 20°) is fitted, there are two 90° bends (flanged) in the second section of piping Assuming f = 0.0216 for both tubes, what is the flow rate?

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