PRESSURE
A woman is wearing high heels. Each heel has an area of 0.001 m², and she weighs 600 N. What is the pressure under one heel?
What is 600,000PA
The pressure measured relative to atmospheric pressure.
It’s the pressure above 101.3 kPa (1 atm).
What is gauge pressure?
This is the equation used to calculate the density of a substance.
What is mass divided by volume?
This is the name of the upward force a fluid exerts on a submerged object.
What is the buoyant force?
This quantity increases as you go deeper into a fluid due to the weight of the fluid above.
What is pressure?
How much pressure is exerted by a column of water that is 3 meters deep? (Use density of water = 1000 kg/m³, and g=9.8 m/s^2)
What is 29,400Pa?
The gauge pressure of a car tire with an absolute pressure of 275 kPa.
(Atmospheric pressure = 101.3 kPa)
What is 173.7 kPa?
An object has a mass of 500 g and a volume of 250 cm³. This is its density in g/cm³.
What is 2 g/cm³?
This principle states that the buoyant force on an object equals the weight of the fluid it displaces.
What is Archimedes’ principle?
A block with a density of 1.1 g/cm³ sinks in water. This is why.
What is its density is greater than the fluid’s?
A sealed tank shows a gauge pressure of 150 kPa. What is the absolute pressure inside the tank? (Assume atmospheric pressure is 101.3 kPa.)
What is 251.3kPa?
Gauge pressure of a balloon submerged 2 meters underwater in a swimming pool.
(Water density = 1000 kg/m³, g=9.8 m/s^2)
What is 19.6kPa?
This 1-liter bottle filled with mercury (density ≈ 13.6 g/cm³) is heavier than the same volume of water because of this property.
What is higher density?
An object displaces 0.01 m³ of water. Given water's density is 1000 kg/m³, this is the buoyant force acting on it. (Use g = 9.8 m/s²)
What is 98 newtons?
A person stands on snow with snowshoes that increase their contact area. This is how it reduces sinking.
What is it reduces pressure by increasing surface area?
A wombat dives to a depth of 10 meters in a freshwater lake. What is the total pressure (absolute) acting on it at that depth? (Assume atmospheric pressure is 101.3 kPa.)
What is 199.3kPa?
The "Wombat 9000" pressure simulator shows the animal is under an internal absolute pressure of 160 kPa. What is the gauge pressure, and is the wombat in danger if its max safe gauge pressure is 50 kPa.
What is Yes, he's in danger, at 58.7kPa!!!
You drop a cube of unknown metal (mass = 540 g, volume = 200 cm³) into water. It sinks. This is the cube’s density.
What is 2.7 g/cm³?
A wooden block floats in water with 75% of its volume submerged. This is the ratio of the block’s density to water’s.
What is 0.75?
An object displaces 0.005 m³ of oil (density = 900 kg/m³). This is the buoyant force acting on it. (Use g = 9.8 m/s²)
What is 44.1 newtons?
A hydraulic lift has two pistons. A small piston with area 0.01 m² is pushed with a force of 100 N. What is the force exerted by the large piston if its area is 0.5 m²?
What is 5,000N?
A tank of gas has a gauge pressure of 200 kPa on Earth. The new gauge and absolute pressure of the tank after being taken to a mountain where the atmospheric pressure is only 85 kPa.
What is 216.3, and absolute pressure stays the same?
A mystery object has a density of 0.92 g/cm³. This is what happens when you place it in water.
What is it floats?
A metal object weighs 200 N in air and 150 N when submerged in water. This is the buoyant force acting on it.
What is 50 newtons?
A cube weighs 100 N and floats with exactly half its volume submerged. This is the density of the fluid it's floating in, if the cube’s volume is 0.02 m³.
What is 1000 kg/m³?