PHY 111 FINAL EXAM
QUESTIONS AND ANSWERS 2026
- 2027
A cube is suspended from a spring scale. The scale reads the
weight of the cube at 15.0 N. The cube is then submerged in water
(density = 1000 kg/m3) while still attached to the scale, which now
reads 10.0 N. What is the volume of the cube?
1. Fb= 15N-10N
Fb= 5N
2. V= Fb/Pfluid(g)
V= 5.0/9800m^3
V= 5.1 x 10^-4 m^3
What depth of water (density = 1000 kg/m3) will result in a fluid
pressure of 5000 Pa?
1. h=Pfluid/p(g)
h= 5000Pa/1000(9.8)
h= 0.5m
Four spheres are designed such that spheres A and B are made of
the same material, and spheres C and D are made of the same
material. The mass of sphere A is equal to the mass of sphere D.
Spheres B and C are the same size. Given the diagram below,
compare the mass of sphere B to sphere C.
The mass of sphere B is greater than the mass of sphere C.
A hydraulic lift is shown below. Both pistons have circular cross
sectional areas. The radius for cross sectional area A1 is half the
,radius for the cross sectional area A2. If a force F1 is applied to
A1, then what will the resulting force F2 be?
F2=4F1
Use the following mercury barometer (density = 13560 kg/m3) to
determine pressure of the gas surrounding the barometer.
Pgas=dgh
Pgas=(13560)(9.8)(0.7)
Pas= 93 kPa
Examine the two fluids in the U-tube manometer below. Which
statement concerning the fluids is most accurate?
The density of the liquid on the left is smaller than the density of the
liquid on the right.
Examine the two fluids in the U-tube manometer below. Which
statement concerning the fluids is most accurate?
The fluid pressures at the bottom of both columns are equal.
Two students stretch a rope between them. One student oscillates
her hand up and down with a frequency f creating a series of
transverse waves that travel down the rope. Which of the
following is a likely outcome if the student doubles the hand
oscillations to 2f?
The wavelengths of the transverse waves will halve.
What is the buoyant force on a sphere that has half its volume
submerged in water (density = 1000 kg/m3) if the radius of the
sphere is 0.1 m? (Vsphere = 4/3πr3, SAsphere = 4πr2)
1. Fb= 2/3pg(pi*r^3)
Fb= 2/3(1000)(9.8)(pi)(0.1^3)
Fb= 21 N
, Which of the following shows the correct superposition of the
wave pulses when points P and Q are at the same position?
A
A student allows a mass attached to a spring to oscillate back and
forth for 10 seconds, which results in the following position vs.
time graph. What effect would switching out the spring for a new
spring with a larger spring constant have on the graph? (Assume
that the starting position is the same for both springs.)
An increase in the number of waves measured in 10 seconds
Which of the following will result if a system experiences a net
torque?
changing speed rotation
What is torque?
-the rotational equivalent of force
-The product of force and the perpendicular lever arm length
Which of the following best defines "spring constant"
Force per m of stretch or compression
Gravitational potential is the energy due to an object's
position in a gravity field
The slope of a position vs. time graph is best defined as
velocity
Which of the following is an example of an oscillating object
all
-The vibration of a string
-A guard marching back and forth between two points
-A child swinging on a swing set
QUESTIONS AND ANSWERS 2026
- 2027
A cube is suspended from a spring scale. The scale reads the
weight of the cube at 15.0 N. The cube is then submerged in water
(density = 1000 kg/m3) while still attached to the scale, which now
reads 10.0 N. What is the volume of the cube?
1. Fb= 15N-10N
Fb= 5N
2. V= Fb/Pfluid(g)
V= 5.0/9800m^3
V= 5.1 x 10^-4 m^3
What depth of water (density = 1000 kg/m3) will result in a fluid
pressure of 5000 Pa?
1. h=Pfluid/p(g)
h= 5000Pa/1000(9.8)
h= 0.5m
Four spheres are designed such that spheres A and B are made of
the same material, and spheres C and D are made of the same
material. The mass of sphere A is equal to the mass of sphere D.
Spheres B and C are the same size. Given the diagram below,
compare the mass of sphere B to sphere C.
The mass of sphere B is greater than the mass of sphere C.
A hydraulic lift is shown below. Both pistons have circular cross
sectional areas. The radius for cross sectional area A1 is half the
,radius for the cross sectional area A2. If a force F1 is applied to
A1, then what will the resulting force F2 be?
F2=4F1
Use the following mercury barometer (density = 13560 kg/m3) to
determine pressure of the gas surrounding the barometer.
Pgas=dgh
Pgas=(13560)(9.8)(0.7)
Pas= 93 kPa
Examine the two fluids in the U-tube manometer below. Which
statement concerning the fluids is most accurate?
The density of the liquid on the left is smaller than the density of the
liquid on the right.
Examine the two fluids in the U-tube manometer below. Which
statement concerning the fluids is most accurate?
The fluid pressures at the bottom of both columns are equal.
Two students stretch a rope between them. One student oscillates
her hand up and down with a frequency f creating a series of
transverse waves that travel down the rope. Which of the
following is a likely outcome if the student doubles the hand
oscillations to 2f?
The wavelengths of the transverse waves will halve.
What is the buoyant force on a sphere that has half its volume
submerged in water (density = 1000 kg/m3) if the radius of the
sphere is 0.1 m? (Vsphere = 4/3πr3, SAsphere = 4πr2)
1. Fb= 2/3pg(pi*r^3)
Fb= 2/3(1000)(9.8)(pi)(0.1^3)
Fb= 21 N
, Which of the following shows the correct superposition of the
wave pulses when points P and Q are at the same position?
A
A student allows a mass attached to a spring to oscillate back and
forth for 10 seconds, which results in the following position vs.
time graph. What effect would switching out the spring for a new
spring with a larger spring constant have on the graph? (Assume
that the starting position is the same for both springs.)
An increase in the number of waves measured in 10 seconds
Which of the following will result if a system experiences a net
torque?
changing speed rotation
What is torque?
-the rotational equivalent of force
-The product of force and the perpendicular lever arm length
Which of the following best defines "spring constant"
Force per m of stretch or compression
Gravitational potential is the energy due to an object's
position in a gravity field
The slope of a position vs. time graph is best defined as
velocity
Which of the following is an example of an oscillating object
all
-The vibration of a string
-A guard marching back and forth between two points
-A child swinging on a swing set
