Physics 142
Homework 7 solution
1. Purcell 6.59 (Scale-down solenoid)
We have two solenoids S1 and S2 of which S1 is a tenth-scale model of S2.
S2 has: L2 = 2 m, D2 = 1 m and is wound with copper wire d2 = 1 cm. When S2 is connected
to V2 = 120 V, it gene
PHYSICS 142 PS5: SOLUTIONS
PAVEL MOTLOCH (ACKNOWLEDING HELP OF KEVIN LABE)
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(PM
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5.15)
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5.31)
1. Problem 1
a) Show that the dot produ
PHYSICS 142 PS1: SOLUTIONS
PAVEL MOTLOCH (WITH HELP OF ALEX TOLISH ON PROBLEM 5)
Contents
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P142 HW 2 Solution
January 19, 2014
Exercise 2.43
Potential from a rod * A thin rod extends along the z axis from z = d to z = d. The
rod carries a charge uniformly distributed along its length with linear charge density . By
integrating over this charge
1
PHYS 142 Homework #1 Solutions
Problem #1
A very uniform field
a) Consider a thin uniform ring of charge Q and radius r. We choose our
origin to be the center of the ring, and the z-axis to be the axis of the
ring. For points along the axis of the ring,
# Purcell Chapter 1, Section 1.6 [or PM
# Author: Frank Merritt (Jan 5, 2014)
# Find the energy per ion of a sodium choride lattice .
#
# Set origin to be location of +Q ion, use lattice spacing of A, and assume
# charge changes sign every time we move a
Ph14100
University of Chicago
F. Merritt
Nov. 22, 2010
Introduction to Special Relativity
(Part B, version 2.0)
9.
Relativistic notation and 4-vectors.
The Lorentz transformations can be put into a more symmetric form by writing them in
terms of ct rather
Ph14100
University of Chicago
F. Merritt
Nov. 22, 2010
Introduction to Special Relativity
(Part A, version 2.1)
1.
Space-time coordinates.
The first step in learning the Special Theory of Relativity is to learn how to think and
visualize in 4 dimensions.
Example: Surface and volume integrals.
a)
Find the surface area of a rectangle of sides A and B:
The differential area is dx ! dy , and the limits of integration are uncorrelated, so the
total area is
A
B
0
0
A = " d! = " dx dy = " dx " dy = AB
V
b)
V
[1]
F. Merritt
Ph14200
26-Feb-2014
Solution of Direct Current RLC Circuits
Using Complex Variables
(version 3.0)
Purcell discusses the direct-current RLC circuit in section 8.1, and describes the solutions
for the three cases of the underdamped, overdamped, a
F. Merritt
Ph14200
26-Feb-2014
Solution of Direct Current RLC Circuits
Using Complex Variables
(version 2.0)
Purcell discusses the direct-current RLC circuit in section 8.1, and describes the solutions
for the three cases of the underdamped, overdamped, a
Namemlj
Ph142 Midterm A
Tuesday, February 4, 2014
This is a closed book and closed notes exam. No calculators are needed or allowed.
Please work all problems in the space provided. You will have 60 minutes to complete
the midterm.
There are four proble
NAME: _
Exam #1
Physics 142A
Do all 3 Problems. 1 page of notes is allowed.
You must show all your work to get credit.
Jan. 27, 2016
1) In the following expressions, A is a constant with units of V/m. Which of these
functions could be the form of a static
NAME: 1)
Exam #2 Physics .142A February 29, 2016 2)
Do all 3 Problems. 1 page. of notes is allowed. . i 3)
You must how all your work to get credit.
TOTAL
1) In the circuit shown, calculate the current in the battery as a function of time if
the switch S
NANIE:
Quiz #3
Physics 142A
1)
Feb. 16, 2016 2)
Do Both Problems; You must show all your work to get credit.
1 page of notes is allowed.
1)
Calculate the effective cap
capacitances are C1= 1 x 10'9
EC
tic J. .L ‘L
l ‘ 1' (~-+(I] —
:13
\ .
TOTAL
acitancc
NAME: 1)
Quiz #1 Physics 142A Jan. 19, 2016 2)
Do Both Problems. You must show all your work to get credit.
1 page of notes is allowed. TOTAL
1) A hollow spherical shell of radius R has a uniform charge density, a, on its outer surface.
Calculate the elec
Ph142 [Win2014]
F. Merritt
Jan 31, 2014
Solution to PM 4.35 (Cubic resistor chains)
Solutions to this problem have already been posted on Piazza (Jonathan
Sorce) and in the official HW4 solutions on Chalk (Zimu Li). I think
both of these are correct and i
Name_
Ph142 Homework Set 7
Due Friday, February 28, 2014 (at 9:30 am)
In general, it is OK to work with others in understanding how to do homework problems - but
all work that you turn in must be entirely your own.
Please turn in your homework, stapled wi
Name_
Ph142 Homework Set 6
Due Friday, February 21, 2014 (at 9:30 am)
In general, it is OK to work with others in understanding how to do homework problems - but
all work that you turn in must be entirely your own.
Please turn in your homework, stapled wi
P142 HW 6 Solution
Wynton Moore
February 23, 2014
P&M 6.37
O-center hole * A long copper rod 8 cm in diameter has an o-center cylindrical hole,
as shown in Fig. 6.43, down its full length. This conductor carries a current of 900 amps
owing in the directio