Spring Sample 1 Explanations
1. We can eliminate B and C (index of refraction has to be bigger than or equal to one and it
is very unlikely that the index is so close to 1 for something that is not air). Use Snells
Law.
2. In I the light undergoes Total I
Static Electricity
(A Qualitative Study of Electrostatics using Sticky Tape)
Goals:
To become familiar with basic electrostatic phenomena
To learn the charge model and learn to apply it to conductors and insulators
To understand polarization and the attra
PHYS 251  MT1
Spring
Sample 1
1. A beam of light shines upon a prism in the shape of an isoceles right triangle as shown. The prism
is immersed in a liquid of unknown index of refraction. It is observed that the beam of light makes
an angle of 30 with re
The Big Ideas:
The name electric current is the name given to the phenomenon that occurs when an electric field
moves down a wire at close to the speed of light. Voltage is the electrical energy density that
causes the electric current. Resistance is the
Exam Name_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Figure 22.3
A point charge Q = 12 mC, and two other charges, q 1 and q 2, are placed as shown. The electric force components on charge Q are
PHYSICS 222
SPRING 2013
EXAM 1: February 20, 2013; 8:15pm10:15pm
Name (printed): _
Recitation Instructor: _
Section #_
INSTRUCTIONS:
This exam contains 25 multiplechoice questions plus 2 extra credit questions, each worth 3
points. Choose one answer only
Scalar Product:
A B A B cos AB Ax Bx Ay By Az Bz
Vector Product:
A B A B sin AB
r F
Newtons second law for rotation
I
Conditions for rolling:
Ay Bz Az B y i
aCOM R and vCOM R
Az Bx Ax Bz
j
Angular momentum:
Ax B y Ay Bx k
Equations of motion:
v v0 a
Name: _
PHYSICS 2220 EXAM 4
SUMMER 2010
Please write your answers to the multiple choice questions on the blanks in front of the numbers. Each multiple choice question is
worth 2 points, questions 6 9 are worth 5 points each, and questions 10 and 11 are w
AP Physics DC Circuit Problems Bueche
1.
For the circuit show to the right:
a. Find the equivalent resistance for the circuit shown to the right.
b. Find I if the value of is 12.0 V.
2.
In the diagram to the right, the value of is 12.0 V, and each resisto
Add forces from each charge as vectors
Bohr model of the H atom assumes
planetarylike circular orbits
r
+q1
I.
how fast is the electron
moving in the Bohr model?
p+
Fnet (on e) = meae = me(v2/r)
ke2/r2
= me
II.
v2 = ke2/mer
Add forces from each charge a
Test 3 Physics 161 Spring 2008 Dr. Morrison
Name
All problems worth 7.7 points each.
Student ID (3digit, not banner ID or ssn)
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1) Which gure shows the c
Lecture 5.1 :
Electric Potential Continued
Lecture Outline:
Electric Potential
Potential Inside a ParallelPlate Capacitor
Potential of Point Charges
Textbook Reading:
Ch. 28.4  28.7
Feb. 11, 2013
1
Announcements
HW5 due next Mon. (2/18) at 9pm on Master
1P22/1P92 Problems (2011) Chapter 20 Electric Fields and Forces
Sunday, January 09, 2011
4:50 PM
CQ 1 What is alike when we say "two like charges?"
Do they look, feel, or smell alike?
CQ 3 Plastic and glass rods that have been charged by
rubbing with wool
27 Gausss Law
27.1 Symmetry
1. An innite plane of charge is seen edge on. The sign of the charge is not given. Do the electric
elds shown below have the same symmetry as the charge? If not, why not?
/ I[
NO The. 1'5 hol'
Fameded in A plane,
T
No 7% M
Exam Name_
TRUE/FALSE. Write 'T' if the statement is true and 'F' if the statement is false. 1) Magnetic field lines come out of the south pole of a magnet and enter at the north pole. MULTIPLE CHOICE. Choose the one alternative that best completes the st
Core Curriculum Assessment Report 2011_12
Department Physics Representative Dr. ChinChe Tin Course Name / number PHYS1600/1617, PHYS1610/1617
1. 2.
AGSC Content Area of Alignment: Area III: Science and Math SLO(s) being assessed: Student will. SLO 10: Stu
Practice Quiz 6
1) A cube whose edges are 0.10 m long has one corner at the origin of an xyzcoordinate system as shown in Figure1. A magnetic field with a strength of 0.40 T is applied along the +xaxis. What is the magnetic flux through the face
of the
Recitation 9
Chapter 23
Problem 1. A at loop of wire consisting of a single turn of crosssectional area A = 8.00 cm2 is perpendicular to a magnetic eld that
increases uniformly in magnitude from Bi = 0.500 T to B f = 2.50 T in 1.00 s. What is the resulti
General Physics PH 203 Name:
Midterm II (Ch 22  25)
July 19,2012
0 Exam is closed book= closed notes. Use only your note card with 12 formulae on it.
0 Write all work and answers in the space provided. Use color papers for additional space or scratch.
0
H
Can O see X in
the mirror?
1. Law of reection tells us angles the same
2. Geometry tells us these are similar triangles
3. Height of left triangle is 3x that of right
0
PHYS 251 Lecture 02
H/3
L/4
3L/4
L
just reverse the arrows!
X
PHYS 251 Lecture 02
2
Understanding light rays helps us understand
what we observe in the world around us!
more rays hit & hit
directly
Sun in
southern sky
What can we see
through this hole?
cant see
fewer rays hit & hit at a
glancing angle
can see
eye
Northern
snow bank
South
+
+
+
+
+
In this diagram of a charged
object:
+
+
+
A. The object only has + charges
as
s
is
ou st
rs ud
eH y
er res
o. ou
co rc
m e
The barbell now has a charge
distribution like this:
A.
C.
D.
E.

+
+
+
+
+
+
+
+
+
Th
PHYS 251 Lecture 09
B.
+
+ + + +
NP
image of
blue object
is left of
screen
FP
NP
Unaided
as
s
With corrective
lens for hyperopia
eye
brown object:
real image
behind eye!
NP
PHYS 251 Lecture 08
I & II are clear
II, III & IV are clear
NP
image of
blue object
is left of
screen
eye
2
Dr. St
First, what kind of lens/mirror is this?
if diverging [convex]: image smaller & upright
Is the object inside or outside f?
Diverging: Always virtual, always upright, always smaller
if s < f (converging): image larger & upright
A 10cmtall light bulb that
The Diverging Lens
vi
a
Before lab next week watch:
Solar heating with an old satellite dish (2:35)
https:/www.youtube.com/watch?v=1s_u0Y8Ywe4
f
ha
re
d
Big Picture (solar water heating) (3:31):
http:/video.nationalgeographic.com/video/culhanesolarwc
f
visib
le
Reection & Refraction problems are exercises in
geometry (including trigonometry)
visib
le
A turtle is in an
empty tank
(whose sides are opaque)
turtle
empty tank
A circular pool has a diameter of 4 meters. You shine a laser to the
exact center o
object
Light rays really go there
Inverted (m < 0)
Enlarged (m > 1)
unaffected
unaffected
optical axis
optical axis
f
f
f
image
optical axis
Out of focus:
screen/CCD/retina not
at location of image!
f
f
Th
in thru f, out 
3
object
screen/CCD/lm/retina
no! O
Another hall of mirrors
mirror
yes! O
3
2 1
1
2 3
LRL
does light ray from
image of X to O to
pass through mirror?
vi
a
A good trick to get
the angle right
RL L
R
LR RLR
PHYS 251 Lecture 04
X
image
Dr. Stephen J. Van Hook, Penn State Univ
An Lshape
more rays hit & hit
directly
What can we see
through this hole?
Sun in
southern sky
two rays tell us what
we need to know
Southern
snow bank
Same principle behind the seasons!
Dr. Stephen J. Van Hook, Penn State Univ
PHYS 251 Lecture 01
is
ou st
rs ud
eH