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Problem 1: A 4 m tall giraffe has a gauge blood pressure of 0.3 atm at its heart, which is 2 m above its feet. The blood density of the giraffe is 1.06 x 103 kg/m3 (a). When the giraffe stands upright, what is the gauge blood pressure at its brain? What is the gauge blood pressure at its feet? (b). If the giraffe suddenly lowers it head to drink water from a pond without lowering its body, what is the increase in the blood pressure of its brain