Pressure
A material that can easily flow
What is a fluid
this is exerted by fluids upon submerged objects
what is buoyant force
squeezing a completely full bottle of water and observing that the pressure distributes equally on all sides of the container demonstrates this
what is pascal's principle
"The faster a fluid moves the less pressure the fluid exerts"
What is the Bernoulli principle
this is equal to the force exerted on a surface divided by the total area over which the force is exerted
what is pressure
The standard unit of pressure
what is a pascal
mass divided by volume
what is density
many brake and lift systems operate using the principles of this type of system
what is a hydraulic system
What happens to two suspended sheets of paper if I move the air between them rapidly
If I introduce 2 Pa of pressure into a bottle full of water how much pressure is exerted on the other side of the bottle
2 Pa pressure is distributed equally according to Pascal's principle
an instrument for measuring atmospheric pressure
what is a barometer
states that the buoyant force acting on a submerged object is equal to the weight of the fluid the object is displacing
what is Archimedes principle
In a hydraulic system the piston with the greater surface area receives what type of force
what is a larger or magnified force
For an airplane to experience lift on which side of the wing must the air move faster
what is the top of the wing so that air pressure is less above the wing than below it
If a hydraulic system doubles the force from one piston to the other what is the surface area relationship between one piston and the other?
What is double or one piston has double the surface area of the other.
this happens to pressure as elevation decreases or as depth increases
what is it increases
describe the effect of the buoyant force
opposes gravity making the object feel lighter
If piston A has 4 times the surface area of piston B how much force will be exerted on piston A if piston B has 25 N of force applied to it?
What is 100 N of force
Can the principle of lift be used to keep something down? describe how.
the pressure you will have if a 500 N force is exerted over an area of 250 squared meters
what is 2 Pa or pascals
Describe the manner in which fluids exert pressure
Fluids exert pressure equally in all directions
Describe how you can use density to predict the relative behavior of objects in a fluid
We would expect objects with greater density to sink lower in the fluid than objects with lower density
Describe what is stated by pascal's principle
when force is applied to a confined fluid, the change in pressure is transmitted equally through all parts of the fluid
list at least three things Bernoulli's principle can explain for us
why planes fly
why smoke rises
how an atomizer works
how discs fly
etc. any three correct.
what happens to the pressure on an object if the force remains the same but I decrease the area the force acts upon
What is the pressure increases