Physics 453 - Final Exam Solutions (in class]
Problem 1.
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MULTIPLE CHOICE PART (16 points total)
Choose the best answer for each question. 2 points per question, no penalty for guessing.
Note: version B had questions and answers in different orders.
Question
PHY131H1F
Term Test version A Solutions
Tuesday, November 15, 2016
Duration: 80 minutes
Air resistance may be neglected in all questions, unless otherwise stated. All questions occur on Earth
unless o
Is the tension force on A equal to the
tension force on B?
A) Yes because Newton's 3rd law.
B) Yes because ropes don't stretch.
C) Yes because the rope is massless.
D) No because the system is
acceler
A block slides on ice. The ice is banked,
so the block slides around in a
horizontal circle. What direction is the
net force?
A) Vertical
B) Horizontal
C) Uphill
D) Downhill
What is wrong with this pi
You are on a Ferris Wheel which rotates
at a constant speed. When you are at the
left most position, what is the direction
of your acceleration?
You are on a boat going 20 m/s east
(relative to the wa
You get into an elevator on the ground
floor. The elevator begins to head up.
While you are accelerating upward,
what is your experience of weight?
A) You feel heavier than usual.
B) You feel the same
A system of pulleys and ropes lets me
pull a rope with 50 N of tension, and yet
I can lift a mass which weighs 500 N
easily. If I want to lift the mass 1 meter,
how much rope must I pull?
A) 100 m
B)
Chapter 6
You are doing bench presses at the
gym. You apply a force of 200 N
upwards for 10 s while holding the bar
above you. How much work do you do?
A) +2000 J
B) +20 J
C) 0 J
D) -20 J
E) -2000 J
W
Chapter 1
A car has a speed of 100 km/h. What is
this speed in m/s?
A) 0.028 m/s
B) 0.1 m/s
C) 28 m/s
D) 100,000 m/s
E) None of the above
SI Units
In classical mechanics, there are only three
fundamen
Welcome!
Introduction to Physics I
(Physics for the Life Sciences)
PHY131H
Brian Wilson & Jason Harlow
Participate in
Recognized Study Groups
By joining or coordinating a study group, you will:
Guaran
A floor is 12 m wide and 24 m long.
What is the area of the floor?
Answer in square meters. Do not enter units.
Problem Solving: IDEA
Interpret: concepts, i.e. what chapter?
Develop: draw a diagram!
E
A ball rolls up a hill, stops, then rolls
back down the hill. Assume up is the
positive direction. At the moment that
the ball is stopped, what is its
instantaneous acceleration?
A) positive
B) zero
C
Lecture Notes 20
Magnetic Field
and
Magnetic Forces
Goals
To observe and visualize magnetic fields and forces.
To study the motion of a charged particle in a magnetic
field.
To evaluate the magneti
Chapter 12
Mechanical Waves
and Sound
1
The Nature of Waves
The Nature of Waves:
Waves and Particles are two great concepts in classical physics.
Types of waves:
Mechanical (water, sound, seismic),
Lecture Notes 17
Electric Charge
and Electric Field
Historical Notes
Amber . attracts bits of straw :
Most of the world's amber is in the range of 3090 million years old.
Electrostatic charge can be
Lecture Notes 18
Electric Potential
And
Capacitance
18.1 Electric Potential Energy
g
Gravity exerts a force, W = mg, on the
basketball of mass m. Work is done by
the gravitational force as the ball fa
Lecture Notes 21
Electromagnetic
Induction
Goals
To overview electromagnetic induction and
Faradays Law.
To observe examples of Lenzs Law.
To study motional electromotive force.
To understand eddy
Lecture Notes 24
Geometric Optics
1
Goals
To study reflections from a plane surface.
To see how reflections from a spherical surface
add new features.
To understand ray tracing and graphical method
Elasticity
and
Periodic Motion
11.1 Stress, Strain, Elastic Deformation
Stress is formally defined
as force per unit area.
Units would therefore be
N/m2 also known as the
Pascal (Pa).
PSI, or lb/in
CHAPTER 10
DYNAMICS OF
ROTATIONAL
MOTION
According to Newtons second law,
a net force causes an
object to have an acceleration.
What causes an object to have an
angular acceleration?
TORQUE
The amou
Lecture Notes 23
Electromagnetic Waves
and
Propagation of Light
1
Goals
To understand electromagnetic waves, the
speed of light, and the electromagnetic
spectrum.
To characterize sinusoidal waves an
CHAPTERS 4 AND 5
Newtons Laws
of Motion and their
Applications
The Concept of Force and Mass
Classes of force:
(A) Contact forces.
(B) Field forces.
Contact forces arise from physical
contact .
Action
Chapter 7
Work and Energy
1
7.1 An Overview of Energy
Energy is conserved.
Kinetic Energy describes motion and relates to the
mass of the object and its velocity squared.
Energy on earth originates
Chapter 3
MOTION
IN A PLANE
Kinematics in Two Dimensions
Displacement, Velocity, and Acceleration
ro initial position
r = final position
r r ro displacement
Average velocity is the displacement
Divi
CHAPTER 9
ROTATIONAL
MOTION
1
Kinematics of Rigid Objects
Pure Translational Motion (Curvilinear or linear),
all points on an object travel on parallel paths.
2
Rigid bodies can rotate around a fixed
Lecture Notes 19
Current, Resistance,
and Direct-Current Circuits
Goals
To understand the concept of current.
To study resistance and Ohms Law.
To observe examples of electromotive force and circui