c V Andersen, 2006
1
Physics 1302, Exam 1 Review
The following is a list of things you should denitely know for the exam,
however, the list is not exhaustive. You are responsible for all the material
covered in the assigned readings, lectures, and homewor
Homework Discussion, Week 9
Physics 1302
Dr. Andersen
Chapter 28
19.) We can use equation 28-3 to nd the angle between the central bright
fringe and rst fringe, and then use that angle in equation 28-1. Note that
the sharp edges of the 2 razor blades will
Homework Discussion, Week 9
Physics 1302
Dr. Andersen
Chapter 26
47.) When the glass is lled, Snells law must apply (taking medium 2 to be
the water in the glass)
sin 1 = n2 sin 2 .
From the triangle when the glass has the water in it:
sin 2 =
W/2
H 2 + (
Homework Discussion, Week 8
Physics 1302
Dr. Andersen
Chapter 26
5.) a) The position of of the spot above the oor is, initially
yi = (2.0 m) tan 32 .
After propping up the mirror, the angle of incidence will be reduced by 5 , so
the angle of reection will
Homework Discussion, Week 6
Physics 1302
Dr. Andersen
Chapter 23
15.) In this case, only the magnetic eld strength is changing, so we can
write Faradays law as E = N A cos (B/t). Because the eld reverses
itself over t = 0.30 s, the change in magnetic eld
Homework Discussion, Week 5
Physics 1302
Dr. Andersen
Chapter 22
8.) Since the force on the electron is zero when it moves in the +x-direction,
the magnetic eld must point in either the +x or x direction, since the
force is zero only when the particle mov
Homework Discussion, Week 4
Physics 1302
Dr. Andersen
Chapter 21
32.) a) Since the resistors are in series, solve V = IReq for Req , then use Req
to solve for R. b) Use V = IR for each. c) If V were larger, and I remained
the same (the textbook author doe
Homework Discussion, Week 3
Physics 1302
Dr. Andersen
Chapter 20
20.) a) Must use conservation of energy to nd the potential energy dierence
equal to the total initial kinetic energy of the proton: U = q V = 1 mv 2 ,
2
and then solve for V . b) The same a
Homework Discussion, Week 2
Physics 1302
Dr. Andersen
Chapter 19
24.) (Note that this question is similar to example 19-3 in the book.) a) We
need to 1) nd the strength of the force between q1 and q2 , and q1 and q3 (since
we are interested in what will h
c V Andersen, 2006
1
Physics 1302, Exam 4 Review
The following is a list of things you should denitely know for the exam,
however, the list is not exhaustive. You are responsible for all the material
covered in the assigned readings, lectures, and homewor
c V Andersen, 2006
1
Physics 1302, Exam 3 Review
The following is a list of things you should denitely know for the exam,
however, the list is not exhaustive. You are responsible for all the material
covered in the assigned readings, lectures, and homewor
Exam 2 Solutions
Multiple Choice Key
1. e
2. c
3. b
4. c
5. d
6. a
7. d
8. e
9. e
10. d
Worked Problems
1. If you choose the current directions as below,
-> I1
I2 <-
then according to the right hand rule, the eld from both will point
into the page. The ma
c V Andersen, 2006
1
Physics 1302, Exam 2 Review
The following is a list of things you should denitely know for the exam,
however, the list is not exhaustive. You are responsible for all the material
covered in the assigned readings, lectures, and homewor
Exam 1 Solutions
Multiple Choice Key
1. d
2. a
3. c
4. b
5. a
6. d
7. c
8. b
9. e
10. c
Worked Problems
1. To nd the total force:
Find the interior angle of the right triangle next to Q1 .
= arctan
30 cm
= 23.2
70 cm
Find the distance from charge 1 to
Physics 1302: Formula Sheet Ch 19-22
k|q1 |q2 |
r2
~
F~ = q0 E
|F~ | =
U = q0 V
V
E=
s
k|q|
~ =
|E|
r2
kq
V =
r
kq1 q2
U=
r
1
1
Q2
U = QV = CV 2 =
2
2
2C
1
2
uE = 0 E
2
Charging a capacitor
q(t) = CE(1 et/ ); Q = CE
E
I(t) = (et/ )
R
= RC
Discharging a c