SAMPLE PROBLEMS
Reflection and Refraction
D. Finkenthal - 2013
4.
Reflection and Refraction
1.
In the following figures, there is a triangle of
glass in air. Which best shows the refracted ray
of light?
5.
A ray of light (incident ray 1) approaches a
sphe
Physics 151
SPIRAL Physics
2010-11 version
problems based on
Paul DAlessandris
Sheets for Physics Instruction through Research-Aided Learning
Monroe Community College
Rochester, NY 14623
modified by Jonathan Cole
for use with R. Knights
Physics for Scient
ELECTROMAGNETISM PROBLEMS
Physics 201
1.
The figure below shows 3 bar magnets of equal
sizes and equal strengths. At which of the points
labeled A to E is the magnetic field approximately
equal to zero? (Points B and C are at equal
distances from the magn
Kinematics in OneDimension
Which position-versus-time graph
represents the motion shown in the
motion diagram?
2
A
B
C
D
Uniform Motion
vavg
x x1 x0
t t1 t0
Slope of x vs t graph
x
x
Non-equal displacements
x
Not uniform motion
t
3
This position vs time
Uniform Circular Motion
An object moves in a circle
with a constant speed.
Period of rotation, T: time it takes
to complete one full rotation
speed =
circumference
period
2r
v
T
1
Angular Position
Angular position, q: defined with respect to +x axis
measu
Energy
transformation of energy from
one form to the other
Mechanical Energy
Pg 270
Roller coaster
Energy of position
Energy of motion
Two types of Mechanical Energy:
Kinetic Energy energy of motion
Potential Energy energy of position
measured in Joules
1
Looking back
Particle acceleration, force, interaction
How does a particle respond to a force? How do objects interact?
Essential concepts
Basic Goals
General Principles
v 0 a 0 Fnet 0
Newtons First Law
Fnet ma
Newtons Second Law
FA on B FB on A
Newtons T
Kinematics in 2D
During which time interval is the particle described by these position graphs
at rest?
A. 01 s
B. 12 s
C. 23 s
D. 34 s
A B C D
2
Displacement in Two
Dimensions
r xi y
j
displacement vector
y (m)
5
r
x (m)
20
A y vs x graph shows the
traje
Kinematics and Dynamics
Kinematic equations describe how an
object moves, but not why it moves.
v f vi at
s vi t 2 at
1
v v 2as
2
f
2
i
2
Dynamics explains the source of
motion (forces)
1
Properties of Forces
A force is a push or a pull exerted on an obj
Torque and Rotational Motion
Translational Motion
v f vi at
s vi t
1
at
2
2
v 2 vi2 2as
f
Fnet ma
dynamics
kinematics
p mv
K
1
2
mv
momentum and energy conservation
2
2
Rotational Kinematics
f i t
i t 2 t
1
2
vt r
at r
2 i2 2
f
3
Where is the center
Interacting Objects
Two objects interact by
exerting forces on each other.
Each body has its own Free Body Diagram
1
Interacting Objects
Two objects interact by
exerting forces on each other.
FG
Gm1m2
r2
2
Interaction Diagram
Two objects interact by
exer
Work and Force
Work: amount of energy transferred into a system by an external force
For constant forces in one dimension:
W = FDs
W is + if F and Ds are in the same direction
W is if F and Ds are in opposite directions
Ds
+W
F
Ds = 0
W
W=0
F
F
Ds
1
Would
A ball tossed straight up has v = 0 at its highest point. At this highest point,
A. The ball is in dynamic equilibrium
B. The ball is in static equilibrium
C. The ball is not in equilibrium
D.
A B C D
1
Dont Forget about Kinematics
Forces
Fnet ma
kinemat
Energy
K=
Energy of motion
2
mv
Energy of position
Gravitational Potential Energy
Energy of position
Ug = mgy
1
Conservation of Mechanical Energy
Ki + Ui = Kf + Uf
Emech = K + U
potential energy
total mechanical energy
DEmech = DK + DU = 0
kinetic energy
Work and Force
Work: amount of energy transferred into a system by an external force
For constant forces in one dimension:
W = FDs
W is + if F and Ds are in the same direction
W is if F and Ds are in opposite directions
Ds
+W
F
Ds = 0
W
W=0
F
F
Ds
1
Would
Vector Quantities
Scalar quantities: fully described by a number (and units)
Vector quantities: full description requires a number (and units) and a direction
Magnitude
v ( v, q )
s ( s, q )
v v speed
v
q
s
q
s s distance
1
Can scalars be negative?
A.
B.
Physics 201
Homework Set 02
CHAPTER 23: Electrical Potential
23[9, 18, 29, 31, 44]
CHAPTER 24: Capacitors
24[5, 7, 17, 29, 31, 37, 43, 71]
232 Potential Related to Electric Field
9. (I) What minimum radius must a large conducting sphere of an electrostati
Physics 201
Homework Set 09
CHAPTER 33: Lenses and Optical Instruments
33[4, 11, 12, 13, 17, 20, 21, 22, 25, 87, 41, 45, 48, 49, 53, 55, 99, 61, 72]
331 and 332 Thin Lenses
4.(II) A certain lens focuses an object 1.85 m away as an image 48.3 cm on the oth
Name
Table
Th xPM
Lab 14 Quiz The Hydrogen Atom
A hydrogen atom has energy levels given by
1
En = 13.6 eV 2
n
where n is a positive integer. A state in which the
electron infinitely far from the nucleus
corresponds to 0 eV. The energy level diagram is
Name
Table
Th 6PM
Lab 15 Quiz Radioactivity
1. If 182 X is an unknown nuclide, what would be
63
an isotope.
A. 182 X
62
B.
182
64
X
C.
180
63
X
D.
182
62
X
2. We measure the radioactivity of a certain
sample of 32P to be 300 mCi. How long before
the radio
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Physics 151 Quiz 3 Name Riga
(9 points)
I) The gure shows two forces acting at right angles on an object. They have magnitudes F; :
6.3 N and F
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line along the x-axis. A plot of its
velocity in the x direction as a
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Quiz 2 ' Physics 151 Name k
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