9. Fluids Flashcards
What does density measure?
How compact an object is.
Fluid pressure is how force is distributed where?
On a surface in a fluid.
Pressure in a liquid applies in which direction?
All directions.
What pressure is caused by the weight of atmospheric gases above the surface of a planet?
Atmospheric pressure.
At sea level on earth, atmospheric pressure is 101,325 pascals, which equals what?
1 atmosphere (atm).
Objects submerged in a fluid experience a force that pushes them towards the surface, called what?
Buoyancy.
The volume of the fluid displaced is equal to what?
The volume of the object submerged.
What does Pascal’s law state?
When pressure is applied, the pressure throughout the liquid increases.
Pascal’s law means that a small force applied to a small area can lift what?
A big load over a large area.
What does Archimede’s principle explain?
The buoyant force equals the weight of the fluid displaced.
If the weight of the water displaced is less than the weight of the object, the object will what?
Sink.
If the weight of the water displaced is more than the weight of the object, the object will what?
Float.
What does Bernoulli’s law explain?
Points of higher speed will have lower pressure.
What are the 3 partial equations of how properties of gases relate?
Isochoric or constant volume, isobaric or constant pressure, isothermal or constant temperature.
Which equation connects all properties of how gases relate?
Ideal gas law.
