Studied by 1 personHow is pressure calculated?
Pressure= force/area
Define pressure
The result of a force distributed over an area
What units are used when calculating pressure?
Force: newtons (N)
Area: square meters (m^2)
Pressure: pascals (Pa) or newtons per meter squared (N/m^2)
1 Pa= 1 N/m^2
If the area of a box that is touching the ground is 1.5 square meters, and its weight is 2700 newtons, what pressure does the box exert on the ground?
P=f/a
p=2700/1.5
p=1800
Define fluid
liquid or gas
How does water pressure change with depth?
Water pressure increases as depth increases
How is water distributed at a given level in a fluid?
The pressure in a fluid at any depth is constant, it is exterted equally on all sides/directions of the container
How are particles in a liquid arranged and how do they behave??
Tightly packed, yet still able to slide past eachother
How are particles in a gas arranged and how do they behave?
Far apart and travel in straight lines until they collide with another particle or object
What are the two factors that determine the pressure a fluid exerts in a non moving fluid?
Depth and the type of fluid
True or false: Pressure depends on the amount.
False, it depends on the depth of the container it is in.
What is the pressure that Earth’s atmosphere exerts at sea level?
101 KPa (kilo pascal) or 101,000 Pa
When altitude increases, what happens to air pressure?
Air pressure decreases
What is 1 atm = in KPa?
101 kPa~
Convert KPa into atm:
1at/101 kpa
Convert atm to KPa:
101 KPa/ 1 atm
What is 1 bar worth?
100 KPa
Convert bar to kPa:
100 kpa/1 bar
Convert kpa to bar:
1 bar/100 kpa
How do you calculate force?
force=pressure * area
What is the relationship between pressure and volume?
Pressure increase= less vloume
What is the relationship between atltitude and pressure?
Altiture increase= pressure decrease
Why aren’t humans crushed by atmospheric pressue?
The pressure we exude on the atmosphere is equal to the pressure it exudes on us which cancels out and equals 0.
Note
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