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Final Exam - solutions
Physics 1B Spring 2015
Please read the following very carefully
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Midterm 1 - Solutions
Physics 1B Spring 2015
Please read the following very carefully
This is a closed book exam. You may use a calculator all other electronic devices
should not be around!
You have 45 minutes to compl
1. Short answers. For multiple choices choose only one answer.
a) Read all information on the front page of this exam and write your name etc. clearly
in the blanks or you may lose points. /r .4 1. Q: c
b) (4 pts)Two of the Maxwells equations state: E ' 6
Materials covered in Midterm 1
Chapter
14
15
12
16
Sections
1, 2, 3, 4,
1, 2, 3, 4,
1, 2, 3, 4,
1, 2, 3, 4,
5, 6, 7
5, 6, 7, 8
5
5, 6, 8, 9
Physics 1B Practice Midterm 1
(1) A string of mass M and length L is hanging from the ceiling under gravity. You in
Physics 1 B Discussion Section
TA: Claudio Emma
1 Feb 2013
Week 4: Midterm Solutions
Learning Goals: Go through problem solving skills and how to apply them in a test situation.
1. A friend of mine has a mobile in the shape of a double-helix hanging from
Physics 1B Midterm 1 Review
April 17th 2015
Chapter 14 Periodic Motion
Oscillation will happen in a system if the system
has a restoring force present when there is
some displacement from equilibrium.
Oscillation Variables
Amplitude A how large is the dis
Physics 1B Spring 2011: Practice Midterm 1
Problem 1: Consider two speakers, both on the y-axis, separated by a distance d=2 meters, and with the bottom speaker at the origin. Each speaker emits the same sound wave, in phase, with frequency f0 = 514 Hz. a
1B Homework 9 Solutions
Jed Schmidt
June 8, 2014
1
Exercise 25.5
1.a
We need to nd the drift velocity.
r=d
2
I
I
J = A = r2
J
vd = nq
L
t = vd = rI nq
2
1.b
The process is the same, a dierent r = d/2 simply needs to get plugged in.
2
Exercise 25.16
The vo
Chapter 16
Sound and Hearing
Mostafa El Alaoui
Chp-16
1
Different ways to describe a sound wave
(a) An undisturbed element of gas
of length x in a tube of crosssectional area A.
V = Sx
(b) When a sound wave
propagates through the gas, the
element is moved
Chapter 16
Sound and Hearing
Mostafa El Alaoui
Chp-16
1
16.6 Resonance and sound
the loudspeaker provides the
driving force for the air in the
pipe.
the resulting resonance curve of
the pipe.
16.7 Interference
The difference in the lengths of the paths
Early Medieval China
b
I 0.6
A SOURCEBOOK
i Edited by
Wendy Swartz, Robert Ford Campany, Yang Lu,
and Iessey I. C. Choo
x
A COLUMBIA UNIVERSITY PRESS
NEW YORK The volume editors and Columbia University Press wish to express their appreciation for the
gra
Second Week Lectures
Walter Gekelman
Chapter 15
University Physics + MORE
Physics 1B
Waves
The next case is what happens when the system is driven, that is the is a force
on the right hand side so our equation is:
2 y
y
+ b + ky = F0 cos (
22.66
We did 22.67 in the class (its in the notes). This is similar but here goes.
Q = Q< + Q> ; Q = ( r )4 r 2 dr
The rst integral is:
R
2
R
r3 2
R3
Q< = 4 r 2 dr = 4 =
6
3 0
0
The second is:
R
R
2
2
R 3 R 3 R 4
r3 r4
R4
r
2 1 4 r 2 dr = 8
= 8
-a/2-l
a/2
a/2+L
21-107
Two thin rods of length L lie along the x axis one between x=a/2 and x=a/2+L. The
other between x=-a/2 and x=-a/2-L, Each rod has positive charge Q distributed along
its length. (a) calculate the electric eld due to rod 2 at points
Physics 1B
Class Notes
Walter Gekelman Week 10
Magnetism
We have studied the force law for a charge in an electric field F = qE . If a magnetic
field is present the generalized law, called the Lorentz equation is:
(1) F = q E + v B
(
)
The magnetic field
Physics 1B
Notes Week 4
Winter 2011
Electricity and Magnetism
Walter Gekelman
This is it folks, these four equations capture all of electricity and magnetism.
We will spend the rest of the quarter an half of next studying what they
Winter Quarter 2011
Professor Walter Gekelman
!
!
!
!
!
!
Physics 1B Class NotesCR
First Week
A bit of History
Democritus
5th century
BC
All matter is made of atoms
Aristotle
384-322 BC
4 elements, Earth is a sphere
Archimedes
287-212 BC
Buoyancy, solid g
Physics 1B Winter 2011 Class Notes !
!
!
!
W. Gekelman
The simplest electric circuit is a battery and a resistor. A battery is a source of electrical
potential difference across its terminals. This is sometimes called the EMF
(electromotive force) of the
Class Notes
Walter Gekelman
Sixth Week
Winter 2011
Electrical Potential
Physics 1B
Finally let us do back to a ring of charge. We derived an equation for the electric eld
Qx
1
Let us
along the x axis of the ring Ex =
3 . The ring i
Physics 1 B Class Notes
Winter Quarter 2011
Walter Gekelman
DC Circuits Week 9
Consider an RC circuit containing a capacitor a resistor and a battery. What happens
when you close the switch?
Assume the current is counterclockwise and use Kirchoffs loop la
10/25/2016
CS174 Midterm Review
Exam this Wednesday
Closed Book
No Electronic Aids
Exam Contents
Multiple choice questions
No partial credit, small penalty for wrong
answers
1 Draw what OpenGl would draw
20% of the grade
1
10/25/2016
What to study
Up