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The figure below shows water flows steadily from the left pipe section (radius r1 = 2R), through the middle section (radius R), and into the right section (radius r3 = 3R). The speed of the water in the middle section is 0.5 m/s. What is the net work done on 0.4 m3 of the water as it moves from the left section to the right section? [𝜌_𝑤𝑎𝑡𝑒𝑟= 997 kg/m3]