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1. A giraffe has a large blood vessel running down its leg. This blood vessel descends 2.5 m from the heart. The radius at its upper end is 0.5 cm, and the pressure in the vessel at the upper end is 200 Torr. What is the pressure at the lower end? Viscosity will play a negligible role. Do not worry about the kinetic energy per volume in this problem.

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