Think you’ve got your head wrapped around Fluids? Put your knowledge to
the test. Good luck — the Stickman is counting on you!
Q. Bigfoot is stranded in Alaska and doesn't have liquid water. However, he has unlimited snow at his disposal, a small heater, a boiling pot, and noodles. To make pasta, how many phases of matter does water go through?
1
3
The number depends on the number of water molecules.
2
The answer depends on how much water will be displaced once noodles are added into the pot.
Q. Archimedes discovers a new element and calls it Shmoop. Shmoop has 200 protons and 200 neutrons. What statement best reflects what can be said about the nucleus of Shmoop?
We can treat the nucleus of Shmoop as a fluid.
The nucleus of Shmoop can only occupy one phase of matter.
The nucleus of Shmoop can occupy an unknown number of phases of matter.
The nucleus of Shmoop is neutral.
We can't treat the nucleus of Shmoop as a fluid.
Q. An apple on a table is moving with a velocity of 
. What forces are at play?
. What forces are at play? Weight, a normal force and friction
A force equal to the apple's mass
There are no forces involved in this problem.
A force equal to the atmospheric pressure on the apple divided by the apple's surface area.
Only gravity
Q. We want to put maximum pressure on an apple with the goals of turning it into applesauce. Which apple should we use to make our the task easier if we apply a maximum amount of force on it?
An apple of radius r = 0.04 m
An apple of radius r = 10 cm
An apple with constant mass
An apple that is juicier
Not enough information
Q. We apply pressure to the surface of a solid Rubik's cube but it remains a cube. Why is that?
The pressure applied was counteracting the atmospheric pressure.
The pressure applied was not strong enough to crush the Rubik's cube.
The pressure wasn't applied to the right place.
The area targeted was too small.
The pressure was not applied at a constant rate.
Q. While going treasure hunting deep underwater, we come across two chests of gold. The smaller one is empty and the larger chest is full of rubies and sapphires. Both chests are of the same height but their widths and lengths vary. Which chest experiences more water pressure?
It depends on whether this problem takes place in salt or soft water.
The smaller chest of gold feels more pressure.
The larger chest of gold feels more pressure.
Both chests feel the same pressure.
It depends on the weather that day.
Q. Two objects have a density of 
but have different surface areas. What is their position relative to each other when dropped in the ocean?
but have different surface areas. What is their position relative to each other when dropped in the ocean? The smaller object is higher.
Both objects will float at the same level.
Both objects will sink to the sea floor.
The larger object is higher.
There is not enough information to answer this question.
Q. An incompressible fluid flows through a pipeline. The pipeline has two different areas A1 and A2, where A1 is twice as large as A2. What is the relationship of v1 to v2 (the velocities of the fluid at A1 and A2, respectively)?
v1 is twice as large as v2.
v1 is half as large as v2.
The velocities do not change.
It depends on how much pressure the fluid is under while traveling through these areas.
The velocities v1 and v2 both double.
Q. A pipeline has two different areas A1 and A2, where A1 is twice as large as A2. What can be said about the pressure of an incompressible fluid within these two regions?
The pressure stays constant everywhere.
The pressure decreases through A2.
The pressure increases through A1.
The pressure decreases through A1.
b and c
Q. Are the energy density terms in Bernoulli's equation numerically higher or lower than kinetic and potential energy terms?
Terms in the Bernoulli equation are equal to their kinetic and potential energy counterparts.
Energy density terms are always lower.
Energy density terms are always higher.
These terms represent different quantities so a numerical comparison would be meaningless.
Ultimately, it depends on how pressure changes in a flow tube of different areas and flow velocities.