water flows in a circular duct. At one seection the diametere is 0.3 m, the static pressure is 269 kPa (gage), the velocity is 3 m/s, and the elevation is 10 m above ground leve. At a section downstream at grount level, the duct diameter is 0.15 m. Find the gage pressure at the downstream section if frictional effects may be neglected

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explanation:

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