Psy 3010
Frequency Distributions and Histograms
1. The following are the number of graduate schools applied to by a group of psychology
students. Set up a grouped frequency distribution of these data. Make the class intervals 2
units wide and begin your l
Psy 3010
Central Tendency and Dispersion
1. Find the mean, median, and mode for each of the following sets of scores.
a. 3, 6, 4, 7, 8, 5, 7, 9, 4, 7
b. 10, 8, 12, 9, 20, 9, 11
2. For which of the sets of scores in question #1 is the mean a poor measure o
Physics 2140 Practice Exam 1
Physics 2140.010 Practice Exam 1
1. A cube contains a point charge Q at its center. What is the total flux through one
side of the cube?
A. (1/6)kQ
B. (2/3)kQ
C. kQ
D. 4kQ
E. 0
2. A helium nucleus is accelerated from rest thro
Psy 3010
Central Tendency and Dispersion
1. Find the mean, median, and mode for each of the following sets of scores.
a. 3, 6, 4, 7, 8, 5, 7, 9, 4, 7 (Mean = 6, Median = 6.5, Mode =7)
b. 10, 8, 12, 9, 20, 9, 11
(Mean = 11.29, Median = 10, Mode = 9)
2. For
1. When a light ray in water (n = 1.33) enters glass with index of refraction 1.60, what is the
greatest angle of refraction that can occur?
A. 90.0
B. 56.2
C. 52.2
D. 38.7
E. 0.0
2. A small object is enclosed in plastic (n = 1.5). The object appears to b
Exam 2
Form A
PHY 2140 Sec 001 Winter 2012. On the Scantron form, write and bubble in your name (no need
for ID number) and write the Form (A or B) in the top margin.
Name _ Row _ Seat Number _
Please mark your quiz section.
_ Monday (Christopher Zin)
_ T
Exam 3
Form A
PHY 2140 Sec 001 Winter 2012. On the Scantron form, write and bubble in your name (no need for ID
number) and write the Form (A or B) in the top margin.
Name _ Row _ Seat Number _
Please mark your quiz section.
_ Monday (Christopher Zin)
_ T
PHY 2140
Class 22, 2/25
Section 001 (David Bowen)
Backchannel URL:
TodaysMeet.com/Framed
Stuff
New Google Moderator site for review topics
for Hour Exam 2
Good question to ask yourself: four wires
problem what about changing directions of
current? Also
PHY 2140
Class 28, 3/19
Section 001 (David Bowen)
Backchannel URL:
TodaysMeet.com/Frameup
Higgs Boson Talk today
You can get two points of extra credit for
attending the Higgs Boson talk today 3 4 PM
in the Student Center Grand Ballroom.
To get the cred
3/14 was
Day
and Einsteins
birthday
PHY 2140
Class 27, 3/17
Section 001 (David Bowen)
Backchannel URL:
TodaysMeet.com/Frameup
Stuff
Skype ID: d.r.bowen
Will have video depending on where I am
Grade_What-If on Blackboard in Content.
Estimate current g
PHY 2140
Class 20, 2/21
Section 001 (David Bowen)
Backchannel URL:
TodaysMeet.com/Framed
Stuff
New Google Moderator site for review topics
for Hour Exam 2
Discussion of common problems on Hour Exam
1 posted on Blackboard under Content >
Exams and relate
1. A 12.6 V battery is in series with a 30.0 mH inductor and 0.150 ohm resistor connected through
a switch. When the switch is closed at t =o, find time constant of the circuit( ans: 0,2 s)
Find the current after 1 time constant has elapsed ( ans: 53.1 A)
Physics 2140 Practice Exam 2
Covering Chapters 18 through 22
1 (Chapter 18). In the diagram, if the current through R1 is 5 A up and if the current
through R3 is 3 A up, what is the current in R2?
A. 8 A up
B. 8 A down
C. 2 A up
D. 2 A down
E. more inform
Chapter 19 MCQ
1. An electron is moving at 3x10 6 m/s at 40 o to a magnetic field of 0.80 T
What is the magnitude of force on the electron?
A.
4.8 x10-13 N
B.
3.8 x10-13 N
C.
2.9 x10-13 N
D.
2.5 x10-13 N
E.
1.2 x10-13 N
Ans D
2. An electron is moving at 2
Multiple choice Questions for Practice
Chapter 18
100 m of a certain type of wire has a resistance of 7.2 . What is the resistance of
2.5 m of the same wire?
(11)
A.
B.
C.
D.
E.
18
1.8
0.18
3.0
0.30
The resistance of a wire increases 3.9 %when the te
Chapter 19
Chapter 21
Constants
F = q v x B = q v B sin
= 2f
0 = 4 x 10-7T.m
A
L
F=I
xB= I
= NIAB sin
r = mv
qB
L B sin
v=E
B
B= oI
2r
f
Irms = Imax
2
Vrms = Vmax
2
Vrms = Irms R
XC = 1
=1
C
1eV = 1.6 X 10-19 J
c = 3 x 108 m/s
2f C
XL = L = 2f L
Vrms(C)
Assume all charges are positive initially. In most of the cases the straight fingers can
represent v and curling fingers ( into the palm) represent B
In the problems below use either / both vector cross product and right hand rule
to get correct answers.
1,.
A diverging lens of focal length 25 cm is placed 10 cm behind a converging
lens of focal length 15 cm., If the object is at infinity, where will the final
image form from the diverging lens?
Ans : S2 + + 6.25 cm ( behind the diverging lens)
2.
Two 20
PHY 2140 Formula Sheet
Constants
c
0
0
|e|
me
mp
E1
a0
C
R
r0
1u
h
=
=
=
=
=
=
=
=
=
=
=
=
=
=
Chapter 16
2.99 108 m/s
8.85 1012 N m2/C2
4 107 T m/A
1.60 1019 C
9.11 1031 kg
1.67 1027 kg
13.6 eV (Hydrogen)
52.9 pm
2.426 pm
1.097 107 m1
1.2 fm
1.66 1027 kg
Phys 2141
Jan 31, 2011 3PM
Equipotential Lines and Lines of Force
Purpose: The purpose of this experiment is to learn about the glow of current through extended
conductors by doing various tests and recording the results.
Procedure: We had to pick a few d
A radar sends a radio signal of frequency 9 x 109 Hz towards an aircraft approaching the
radar. If the reflected wave shows a frequency shift of 3 X 103 Hz, the speed with which
the aircraft is approaching the radar in m/s is (velocity of radio signal is
PHY 2140
Class 20, 2/21
Section 001 (David Bowen)
Backchannel URL:
TodaysMeet.com/Frameup
Stuff
New Google Moderator site for review topics
for Hour Exam 2
Discussion of common problems on Hour Exam
1 posted on Blackboard under Content >
Exams and relat
PHY 2140
Class 19, 2/19
Section 001 (David Bowen)
Backchannel URL: TodaysMeet.com/Frameup
Stuff
Frameworks and Details updated on
Blackboard under Content for Chapter 20
New Google Moderator site for review topics
for Hour Exam 2
Suggestions for Assign
PHY 2140
Class 7, 1/22
Section 001 (David Bowen)
Backchannel URL: TodaysMeet.com/Framed
Pick up a copy of the handout at the front desk
Stuff
Study Groups forming and meeting
Opportunity for extra credit, see me for help setting one up
Link to site on
PHY 2140
Class 1, 1/6
Section 001 (David Bowen)
Pick up Syllabus at front desk (in two pieces)
Backchannel URL: TodaysMeet.com/Framework (Huh?)
Syllabus
Pick up a copy of the Syllabus in front
Review:
1/8
Topic
Quiz Sections
Lab course separate, starts
Gravitational torque causing axis to turn, called precession
Fluids
States of Matter (9.1)
Solids. Here we treat these as fixed shape and volume
Liquids. Take shape from container. Here, treat as
incompressible
Gases. Expand to fill container. Compressib