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Physics 221 Spring 2006 Exam 2
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PHYSICS 221
Spring 2006
EXAM 2: March 30 2006 8:00pm—10:00pm
Name (printed): ____________________________________________
ID Number: ______________________________________________
Section Number: __________________________________________
INSTRUCTIONS:
Each question is of equal weight, answer all questions. All questions are multiple choice.
Choose the best answer to each question.
Before turning over this page, put away all materials except for pens, pencils, erasers,
rulers, your calculator and “aid sheet”. An “aid sheet” is one two sided 8½
×
11 page of
notes prepared by the student. There is also a list of possibly useful equations at the end
of the exam.
"In general, any calculator, including calculators that perform graphing numerical
analysis functions, is permitted. Electronic devices that can store large amounts of text,
data or equations are NOT permitted."
If you are unsure whether or not your calculator
is allowed for the exam ask your TA.
Examples of allowed calculators: Texas Instruments TI30XII/83/83+/89, 92+
Casio FX115/250HCS/260/7400G/FX7400GPlus/FX9750 Sharp EL9900C.
Examples of electronic devices that are not permitted: Any laptop, palmtop, pocket
computer, PDA or ebook reader.
In marking the multiple choice bubble sheet use a number 2 pencil. Do NOT use ink. If
you did not bring a pencil, ask for one. Fill in your last name, middle initial, and first
name. Your ID is the middle 9 digits on your ISU card. Special codes K to L are your
recitation section, for the Honors section please encode your section number as follows:
H1
⇒
02; H2
⇒
13 and H3
⇒
25
.
If you need to change any entry, you must completely erase your previous entry. Also,
circle your answers on this exam. Before handing in your exam, be sure that your
answers on your bubble sheet are what you intend them to be.
It is strongly suggested that you circle your choices on the question sheet.
You
may also copy down your answers on a piece of paper to take with you and compare
with the posted answers. You may use the table at the end of the exam for this.
When you are finished with the exam, place all exam materials, including the bubble
sheet, and the exam itself, in your folder and return the folder to your recitation
instructor. No cell phone calls allowed. Either turn off your cell phone or leave it at home.
Anyone answering a cell phone must hand in their work; their exam is over.
Total number of questions is 28. Question 58 is “extra credit”
Best of luck, David Atwood and Paula HerreraSiklody
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Formula sheet Exam 2 – Phys 221 – Spring 2006
Vectors and math
Geometry
perimeter circle: 2
R
π
2
area circle:
R
2
area sphere: 4
R
3
4
volume sphere:
3
R
1 revolution = 2 radians = 360
D
Physical constants
2
9.81 m/s
g
=
11
2
2
6.67 10
Nm /kg
G
−
=×
General kinematics
average
v
∆
=
∆
G
G
r
t
average
v
∆
=
∆
G
G
a
t
v
=
G
G
dr
dt
v
=
G
G
d
a
dt
Circular motion
d
dt
θ
ω
=
d
dt
α
=
sR
=
v
=
R
tan
=
aR
12
2
v
==
=
R
T
f
2
2
rad
v
R
tan
v
=
G
d
a
dt
rad
tan
=
+
G
GG
aa a
x
y
z
ˆ
i
ˆ
j
ˆ
k
10
−
15
femto
(f)
10
−
12
pico
(p)
10
−
9
nano
(n)
10
−
6
micro
(ì)
10
−
3
milli
(m)
10
3
kilo
(k)
10
6
mega
(M)
10
9
giga
(G)
10
12
tera
(T)
2
2
4
0
2
bb
a
c
ax
bx c
x
a
−±
−
++
=
⇒
=
1
nn
d
x
nx
dx
−
=
cos
sin
d
x
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 Fall '08
 HerreraSiklody
 Physics

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