FIELD DESCRIPTION OF MAGNETIC AND ELECTRIC FORCES
PROBLEM 8.1
The identity to be verified is
V-(iA)
= 4IV.A + R-*VI
First express the identity in index notation.
aA
[PA] =
I
m
x
m
x
+ A
m
m ax
m
The repeated subscript indicates summation.
Thus, expanding

Page 1
11/3/2006
22.01 Problem Set 5 Homework Solutions
1) (3 points) A narrow beam of 108 photons per second is normally incident on a 6 mm
aluminum sheet. The beam consists of equal numbers of 200 keV photons and 2 MeV
photons.
a) Calculate the number o

Fall 2004
2.032 DYNAMICS
Quiz No. 1
Monday, October 25, 2004
This is a CLOSED-BOOK, open-notes Quiz.
Problem 1
(20 points)
Servomotors make the ywheel spin at a constant rate 2 , and also impose a vertical
rotation rate 1 that is a function of time (see g

22.06
ENGINEERING OF NUCLEAR SYSTEMS
QUIZ 1 (solutions)
1.5 HOURS
CLOSED BOOK QUESTIONS (20%)
For each of the following drawings, identify the components indicated by the red arrows and
describe (in one sentence!) their function.
PWR
What is it? What is i

Question I:
Consider a closed system at constant volume composed ofa veiy large number N of
distinguishable subsystem which do not interact with each other upon forming the larger
system. The subsystem can be only be in one oftwo energy states: E = 0, or

22.01 Introduction to Ionizing Radiation
Fall 2006
Problem Set #5
Due Date: Thursday, October 26, 2006
Show all work. Provide units on all answers.
(Make use of graphs and tables in the Text whenever possible.)
1) A narrow beam of 108 photons per second i