Fluids Quiz True or False
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1.
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
True
False
2.
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? -> The nucleus of Shmoop can occupy an unknown number of phases of matter.
True
False
3.
An apple on a table is moving with a velocity of
. What forces are at play? -> A force equal to the atmospheric pressure on the apple divided by the apple's surface area.
True
False
4.
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
True
False
5.
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.
True
False
6.
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? -> Both chests feel the same pressure.
True
False
7.
Two objects have a density of
but have different surface areas. What is their position relative to each other when dropped in the ocean? -> The larger object is higher.
True
False
8.
An incompressible fluid flows through a pipeline. The pipeline has two different areas
A
1
and
A
2
, where
A
1
is twice as large as
A
2
. What is the relationship of
v
1
to
v
2
(the velocities of the fluid at
A
1
and
A
2
, respectively)? -> The velocities
v
1
and
v
2
both double.
True
False
9.
A pipeline has two different areas
A
1
and
A
2
, where
A
1
is twice as large as
A
2
. What can be said about the pressure of an incompressible fluid within these two regions? -> b and c
True
False
10.
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.
True
False
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