$$Oil (density of 2000 kg/m3) is flowing through a horizontal pipe (cross-sectional area = 0.1 m2). A pressure gauge shows a reading of 25250 Pa in the pipe. The oil is flowing through the pipe at a rate of 0.001 m3/s. The oil encounters a narrowing in the pipe, so that the cross-sectional area reduces to 0.05 m2. Determine the reduction in pressure in the narrower section of pipe.

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