Question

PRINTER VERSION « BACK NEXT Chapter 14, Problem 011 Your answer is partially correct. Try again. Flying Circus of Physics Giraffe bending to drink. In a giraffe with its head 1.87 m above its heart, and its heart 2.05 m above its feet, the(hydrostatic) gauge pressure in the blood at its heart is 228 torr. Assume that the giraffe stands upright and the blood density is 1.06 103 kg/m². In torr (or mm Hg), find the (gauge) blood pressure (a) at the brain the pressure is enough to perfuse the brain with blood, to keep the giraffe from fainting) and (b) at the feet (the pressure must be countered by tight-fitting skin acting like a pressure stocking). (c) If the giraffe were to lower its head to drink from a pond without splaying its legs and moving slowly, what would be the increase in the blood pressure in the brain? (Such action would probably be lethal.) Units torr or mm Hg (a) Number 82.15 (b) Number 242.57 Units torr or mm Hg udy. (c) Number 160.42 Units torr or mm Hg Click if you would like to Show Work for this question: Open Show Work

Answer 1

(a) p= Pheast - pgh (1.06818 x g. B) x 1:87) ( 228 x 121.32 Pa) 10952 toor P = 10952 Pa 123.32 P = 82.15 toor top P= ( 223 X 133.32) - (1006x102x3.8) X = 2:05) = 51714 De P = 388 toor Pat Pb = APP 82.15 + 388 470 toon CS Scanned with CamScanner