Giraffe Pressure Difference - 20Pa

[disneygirl828]

Homework Statement

Giraffes have long necks, creating different pressures between their heads and hearts. Giraffes have evolved to deal with this difference. If the distance between a giraffe''s head and heart is 1.95m and its blood has a density of 1.05kg/m^3, what is the difference in pressure between the head and heart?

Homework Equations

p=dgh

The Attempt at a Solution

p=?
d= 1.05kg/m^3
h=1.95m
p=(1.05kg/m^3)(10m/s^2)(1.95m)
p=20.475Pa(the head)
p=?
d=1.05kg/m^3
g=10m/s^2
h=0m
p=(1.05kg/m^3)(10m/s^2)(0m)
p=0Pa(the heart)
20.475Pa-0pa=20Pa

 

[Stonebridge]

Yes that's correct.