Fluid Properties
This intermolecular force holds a piece of matter together by acting between molecules of the same substance.
What is Cohesion?
Density is defined as the ratio of an object's mass to its volume, and is represented by this Greek letter.
What is ρ (rho)?
Pressure is defined as the normal force per unit of area. The SI unit for pressure is this unit, named after a scientist who studied fluid pressure.
What is Pascal (Pa)?
This French scientist and mathematician discovered that an external pressure applied to a confined fluid is transmitted uniformly throughout the volume of the liquid.
Who is Blaise Pascal?
This ancient Greek philosopher, physicist, and mathematician discovered the relationship between buoyancy and displaced fluid in the third century BC.
Who is Archimedes?
The force of attraction between molecules of a solid and a liquid when they are in contact is called this.
What is Adhesion?
If a substance has a mass of 50 kg and a volume of 10 m³, what is its density?
What is 5 kg/m³?
If a 30 kg piston rests on a gas cylinder with a radius of 0.05 m, what is the approximate gauge pressure?
What is approximately 37,452 Pa or 37.45 kPa?
State Pascal's Principle in one sentence.
An external pressure applied to a confined fluid is transmitted uniformly through the volume of the liquid?
Archimedes' Principle states: An object that is completely or partly submerged in a fluid experiences this type of force equal to the weight of the fluid displaced.
What is an upward force? (Or: What is a buoyant force?)
This property allows certain insects to stand on the surface of water and is the resistance that the free surface of a liquid presents to being penetrated.
What is Surface Tension?
What are the SI units for weight density?
What is N/m³ (Newtons per cubic meter)?
This is the pressure exerted by the air of the atmosphere on Earth's surface and decreases with altitude because air becomes less dense.
What is Atmospheric Pressure?
This machine, based on Pascal's Principle, uses the uniform transmission of pressure through a liquid to lift heavy objects with less applied force.
What is a Hydraulic Press?
The formula for buoyant force is Fb = mg. What does the "m" represent in this equation?
What is the mass of the fluid displaced? (NOT the mass of the object)
The rise or depression of a liquid in a small passage such as the spaces between the fibers of a towel is called this phenomenon, which occurs in plant sap rise.
What is Capillarity?
A cube has sides of 2 cm and a mass of 21.6 grams. Calculate its density in kg/m³.
What is 2,700 kg/m³?
The fluid pressure at any point underwater is directly proportional to these two factors. Name them both.
What is the density of the fluid AND the depth below the surface?
All classes Manu has taught in Ciencias
Physics
Chemistry
Math
French
Ecology
Geography
A steel cube with 30 cm edges and 60 kg mass is totally submerged in fresh water (density 1,000 kg/m³). Calculate the buoyant force it receives.
What is approximately 264.9 N?
This property of a fluid represents its resistance to change in shape and the difficulty of liquid layers sliding relative to one another. An example is honey flowing slowly compared to water.
What is Viscosity?
A water tank must store 10,000 kg of fresh water. If the density of fresh water is 1,000 kg/m³, what volume in m³ must the water tank have?
What is 10 m³?
At sea level, atmospheric pressure is 101,300 Pa. If gauge pressure is 120 kPa, what is the absolute pressure in kPa?
What is 221.3 kPa? (101.3 kPa + 120 kPa = 221.3 kPa)
Manu's favorite subject as a student
Physics
Manu studied this in ITESO