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Water at a pressure of 3.50 atm at street level flows into an office building at...

Water at a pressure of 3.50 atm at street level flows into an office building at a speed of 0.55 m/s through a pipe 6.80 cm in diameter. The pipes taper down to 3.00 cm in diameter by the top floor, 26.0 m above. Calculate the water pressure in such a pipe on the top floor.

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