Pressure (fluids and air)
Air pressure decreases as what increases?
altitude
Each tile on the bottom of a swimming pool has an area of 0.50 m^2. The water above each tile exerts a force of 11,000 N on each tile. How much pressure does the water exert on each tile?
11,00/0.50=22,000 N/m=22,000 Pa=22 kPa
The velocity of a stream of fluid results in a decrease in pressure.
What is Bernoulli's principle
What is buoyancy?
The ability of a fluid to exert an upward force on an object
What are thrust, drag, lift, and weight?
they are the four forces that act on an airplane in flight.
As you go down deeper in a swimming pool. The what increases?
Water pressure
A device that uses pressurized fluid acting as a piston of different sizes to change a force
Hydraulic system
What happens when an object is less dense than a fluid its in?
It will float
are the four forces that act on an airplane in flight.
This is the result of a force distributed over an area.
What is a device that uses pressurized fluids
hydraulics
What is lift
The pressure difference between the top and bottom
How is buoyant force produced?
the forces pushing up on the bottom of the object are greater than the forces pushing down on the object
What is lift?
This is created when a wing has a curved top and a flat bottom.
what is the pressure formula.
pressure = force/area
What is pascal’s principle
A change in pressure at any point in a fluid is transmitted equally and unchanged in all directions throughout the fluid.
What happens when an object is more dense than a fluid its in?
It will sink
What is a hose or spray bottle?
This machine is based on Bernoulli's’ principle
true of false: water presser does not increase the deeper you go?
true
What is Archimedes principle
The buoyant force on an object is equal to the weight of the fluid displaced by the object
How is density and Buoyancy related?
Density is the ratio of an objects mass to volume
How is pressure different from force
Force is the total impact of one object on another.Pressure is the ratio of force to area over which it is applied