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A fluid of constant density equal to 880 kg/m3 is flowing steadily through a contracting expanding...

A fluid of constant density equal to 880 kg/m3 is flowing steadily through a contracting expanding pipe. The diameters at the sections are d1= 125 mm and d2 = 75 mm. The gauge pressure at the first section is P1 = 220 kN/m3 and the velocity is 4.25 m/s. What is the velocity at the second section? what is the gauge pressure at the second section?

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