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Giraffes are a wonder of cardiovascular engineering. Calcu-late the difference in pressure (in atmospheres) that theblood vessels in a giraffe's head must accommodate as thehead is lowered from a full upright position to ground levelfor a drink. The height of an average giraffe is about 6 $\mathrm{m} .$

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0.6$a t m$

Physics 101 Mechanics

Chapter 13

Fluids

Fluid Mechanics

University of Michigan - Ann Arbor

Simon Fraser University

University of Sheffield

McMaster University

Lectures

03:45

In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases, plasmas and, to some extent, plastic solids.

09:49

A fluid is a substance that continually deforms (flows) under an applied shear stress. Fluids are a subset of the phases of matter and include liquids, gases and plasmas. Fluids display properties such as flow, pressure, and tension, which can be described with a fluid model. For example, liquids form a surface which exerts a force on other objects in contact with it, and is the basis for the forces of capillarity and cohesion. Fluids are a continuum (or "continuous" in some sense) which means that they cannot be strictly separated into separate pieces. However, there are theoretical limits to the divisibility of fluids. Fluids are in contrast to solids, which are able to sustain a shear stress with no tendency to continue deforming.

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Giraffes are a wonder of c…

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A giraffe'$ brain is …

01:13

A giraffe's brain is …

03:24

Giraffe bending to drink. …

05:54

$Giraffe bending to drink$…

03:48

$\cdot 11$ As Giruffe bend…

03:12

WEIGHT AND HEIGHT OF GIRAF…

00:36

The height of a full-grown…

00:47

The height of an adult gir…

06:24

{ Blood iassume } \mu=4.5 …

here. The training pressure is simply gonna be equal to the density times of gravity, times the change in height. So don't age. So we can say that the change in pressure divided by the atmospheric pressure would be equal to the down city times acceleration due to gravity times a change in height divided by the atmospheric pressure. Once again Ah, this is gonna equal 1050 kilograms per cubic meter times a nine point eight meters per second squared times the change in height of six meters. And then this will be divided by 101,325 Pascal's and we find that the change in pressure with respect to the atmospheric pressure would be 0.61 or we can say 0.61 atmospheres. This would be our final answer. That is, this would be this would simply be the change in pressure. But in terms of atmospheres. So that would be a friend of lancer 0.61 atmospheres. That is the end of the solution. Thank you for watching

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