Archimedes
Pascal
Bernoulli
Applications
Problems
100
An object will do this when it is more dense than the fluid it is in.
What is sink?
100
Pressure is expressed in this unit of measurement.
What is a Pascal?
100
Of the two types of proportions, direct and inverse, fluid flow velocity and pressure share this proportionality.
What is inverse?
100

A boat sinks when too much mass is added to it because density increased while this remained constant.

What is volume?

100

A canoe has a volume of 1 cubic meter and a mass of 35 kg. Theoretically, this many 80 kg people could get into the canoe, although it is not a good idea to try.

What is twelve?

Explanation:  water is 1000kg/m3 and the boat cannot be more than that or it will sink.

80kg X 12people = 960 kg + 35 kg = 995 kg/m3

200

An object will do this when it is the same density as the fluid it is in.

What is suspend/flink?

200
This is the most basic equation for pressure.
What is force over area
200
When fluid flow velocity increases, pressure does this.
What is decreases?
200
Stepping on a single nail will puncture you, but stepping on a bed of nails will not because of this.
Force is spread out over a larger area.
200

A water tower is filled with water 20 m above the ground. If a hose is connected to the bottom, water could shoot this fast out of the hose.

What is 19.8 m/s?

Explanation:  pgh1 = pgh2 + 1/2pv22 , solve for v2

300
This is the equation for density.
What is mass divided by volume?
300
Pascal's Principle states this about fluid pressure in a closed vessel.
It is equal throughout the vessel.
300

What principle explains why airplanes fly?

What is Bernoulli?

300

A hurricane has no wind in the eye, meaning it has this kind of air pressure in the eye.

What is high pressure?

Remember: increased velocity means lower pressure!

300

A homemade redneck submarine can withstand 3.0 times normal atmospheric pressure above surface pressure. This is the depth it can dive in fresh water.

What is 31m?

Explanation:

3 X 1.01 X 105 = pgh, solve for h

400
This is how you determine apparent weight.
What is weight force minus buoyant force?
400

If a car is applying pressure on a large hydraulic piston, this pressure must be applied to a smaller connected piston.

What is the same pressure? (different force!  But F/A must be the same because F1/A1 = F2/A2)

400

Bernoulli's Equation takes the equations for these types of energy and divides them by volume.

What is potential and kinetic?

400
An airplane wing lifts a plane because the air pressure under the wing is this compared to the pressure above the wing.
What is higher?
400

Air density is 1.225 kg per cubic meter. If the measured air pressure is 14906 Pa below atmospheric pressure during a tornado, this is the wind speed.

What is 156 m/s?

Explanation:

P1-P2 = 1/2 pv22

500

This is the equation for buoyant force.

What is mf X g   or   pf X vf X g  or weight in air - weight in fluid

500
Of the two types of proportions, direct and inverse, pressure shares this proportionality with fluid depth.
What is direct?
500
Problems involving Bernoulli's Equation often end up being simple for this reason.
Most of the equation cancels out.
500
A hot air balloon rises because the air inside the balloon is this compared to the air outside the balloon.
What is less dense?
500

The human skull can withstand 7,384,481 Pa of pressure (I looked it up). A heel on a high-heeled shoe has a radius of 0.01 m. A person of this mass could stand on Jonathan's head without crushing it, but no heavier.

What is 236 kg?

Explanation:

P=F/A  F=PA, A = Pi r2 then  m = F/9.81

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