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Hw2
School: Lehigh
Physics 21 Fall, 2008 Solution to HW2 211 Excess electrons are placed on a small lead sphere with a mass of m = 8.40 g so that its net charge is Q = 4.00 109 C. (a) Find the number of excess electrons on the sphere. (b)How many excess electrons

Lecture 3 1 2410 Rev 012710
School: Lehigh
Course: Physics 21
Lecture3 Chapter 22 Electric Fields Field: a spatial distribution of a physical quantity, e.g., the temperature field in Pennsylvania the magnetic field around the earth the electric field of a cell phone provider. 3/26/10 In principle, we can define the

Hw15
School: Lehigh
Physics 21 Fall, 2008 Solution to HW15 2839 A long, straight, cylindrical wire of radius R carries a current uniformly distributed over its cross section. At what location is the magnetic eld produced by this current equal to half of its largest

Ch02
School: Lehigh
Course: Physics 1
CHAPTER 2 Motion in One Dimension 1* What is the approximate average velocity of the race cars during the Indianapolis 500? Since the cars go around a closed circuit and return nearly to the starting point, the displacement is nearly zero, and

Ch18F
School: Lehigh
Course: Physics 1
CHAPTER 19 Heat and the First Law of Thermodynamics 1* Body A has twice the mass and twice the specific heat of body B. If they are supplied with equal amounts of heat, CA = 4CB; TA = TB/4 how do the subsequent changes in their temperatures com

Hw4
School: Lehigh
PHY 421, Spring 2009 Homework 4 1. A long, hollow cylindrical conductor of radius a is divided by two parts by a plane through the axis, and the parts are separated by a small interval. See the illustration below. If the two parts are kept at poten

HW6+Sol
School: Lehigh
1. (A) Find the thicknesses of a particular birefringent crystal (n1 = 1.4737 and n2 = 1.4714) needed to produce /4, /2, and retardation plates, respectively, for the Argon laser line ( = 488 nm). Retardation = d(n1 n2) d = (n1 n2) where (n

Hw1
School: Lehigh
PHY 421, Spring 2009 ^ 1. If = x2 yz 3 and A = xz ^  y 2 ^ + 2x2 y k, find: i j (a) , (b) A, (c) A, (d) ( A), and (e) ( A). Homework 1 2. Determine whether there is a function such that E =  (if so, determine the charge density (x), where: