Fluids Under Pressure
9.8
we use fluids in every day life work
hoses/fire pumps
used to make fluids leave a system with great force
( under pressure )
for example, backhoes
use hydraulic rams
similar to syringes
9.7
the circulatory system is a closed hydraulic system
internal combustion engine
a device that provides power by burning fuel
within its cylinders
prevents blood from backing up/pooling in veins
devices that control the movement of a fluid through a
hollow tube or pipe
fluid filled. heart and blood vessels form a sealed
compartment in the body ( closed )
9.4
Pascal's Law
states that a force applied to a fluid is distrubuted equally through all parts of the fluid
Blaise Pascal
French mathematician & physicist
atmospheric pressure
water
exerts pressure
exerts more pressure than air
decreases the higher you ascend, because of the less air above you
force exerted by the atmosphere
pressure
1 Pa = 1N/m2
P = F/A
force per unit area
9.5
when liquids are under pressure, their volume decreases as well as a gas
this when using rigid containers
large amount of gas in a small volume and when
more gas particles are added, it creates collisions
causes the temperature to rise which makes the particles of a fluid move faster/farther apart. (fluid expands)
but the decrease in the liquid is barely noticeable
9.1
keep fluid moving at desired time/direction
Pneumatic
gases
air
an object that is able to be squeezed into a smaller volume
Compressibility
pressure gauge
monitors pressure within a system
valves
keeps fluid moving at desired time/direction
conductors
pathway to carry fluids
pump
fluids through a system
Hydraulic
liquids
Compress
Squeeze
