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Assignment MasteringPhysics: Print View
A Few Bumps on the Road
Learning Goal: To learn to apply the microscopic theory of conduction. A gauge-12 wire has diameter centimeters and length meters. When the voltage volts is applied to the ends of the wire, the current is amperes. The concentration of free electrons in the wire is Part A Find the resistivity Hint A.1 of the wire. Hint not displayed Hint A.2 Hint not displayed Part A.3 Part not displayed Part A.4 Part not displayed Express your answer in ohm-meters. Use two significant figures. ANSWER: 2.7510 = -8 Part B Find the mean time Hint B.1 between electron collisions in the wire. Hint not displayed Hint B.2 Hint not displayed Hint B.3 Hint not displayed Express your answer in seconds. Use two significant figures. ANSWER: 2.2010 = -14 per cubic meter.
MasteringPhysics: Assignment View
Problem Print 28.1
1.50 electrons flow through a cross section of a 3.00 . iron wire in 6.00 .
The electron density of iron is Part A What is the electron drift speed? ANSWER: 41.6
Problem 28.6
Part A What is the surface charge density of a 1.0-mm-diameter wire with 1000 excess electrons per centimeter of length? ANSWER: -5.0910
-3
Problem 28.40
You need to design a 1.0 A fuse that "blows" if the current exceeds 1.0 A. The fuse material in your . stockroom melts at a current density of Part A What diameter wire of this material will do the job? ANSWER: 0.505 mm
Problem 28.41
MasteringPhysics: Assignment Print View
A 75.0 hollow copper cylinder is 90.0 long and has an inner diameter of 1.0 cm. The current . density along the length of the cylinder is 2105 Part A What is the current in the cylinder? ANSWER: 1.86 A

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Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewProblem 29.8Three electrons form an equilateral triangle 1.50 triangle. Part A on each side. A proton is at the center of theWhat is the potential energy of this group of charges? ANSWER: -3.3710-19JProblem 29.

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewPotential of a Charged DiskA disk of radius has a total charge uniformly distributed over its surface. The disk has negligible thickness and lies in the xy plane. Throughout this problem, you may use the variable i

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewProblem 31.58Part A Suppose the circuit in the figure is grounded at point d. Find the potential at each of the four points a, b, c, and d. ANSWER: = -4.00 VPart B ANSWER: Part C ANSWER: Part D ANSWER: Part E Repe

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewReading Quiz 32.3Part A The magnetic field of a point charge is given by ANSWER: Biot-Savart's law. Einstein's law. Faraday's law. Gauss's law Ampre's law.Reading Quiz 32.4Part A The magnetic field of a straight,

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewProblem 32.67A 63.0 -cm-diameter cyclotron uses a 490 Part A What is the maximum kinetic energy of a proton if the magnetic field strength is 0.740 ANSWER: 4.1610-13oscillating potential difference between the de

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewAn Air-Filled Toroidal SolenoidAn air-filled toroidal solenoid has a mean radius of 15.1 (see the figure). The current flowing through it is 12.5 within the solenoid be at least 0.387 . Part A What is the least num

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewReading Quiz 28.1Part A What quantity is represented by the symbol ANSWER: ? Current density Complex impedanceResistivity Conductivity Johnston's constantIntroduction to Electric CurrentLearning Goal: To underst

Stevens - PEP - 112

ELECTRIC CHARGES AND FORCES25.1. Model: Use the charge model. Solve: (a) In the process of charging by rubbing, electrons are removed from one material and transferred to the other because they are relatively free to move. Protons, on the other hand, are

Stevens - PEP - 112

THEELECTRIC FIELD26.1. Model: The electric field is that of the two charges placed on the y-axis.Visualize: Please refer to Figure Ex26.1. We denote the upper charge by q1 and the lower charge by q2. Becauseboth the charges are positive, their electric

Stevens - PEP - 112

GAUSS'S LAW27.1. V i a l i e :As discussed in Section 27.1, the symmetry of the electric field must match the symmetry of the charge distribution. In particular, the electric field of a cylindrically symmetric charge distribution cannot have a component

Stevens - PEP - 112

CURRENT AND CONDUCTIVITY0 28.1. Solve: The wire's cross-sectional area is A = mz = ~ ( 1 . x 10" m)' = 3.1415 x lo4 m2, and the electron current through this wire is 2.0 X loi9 s-l . Using Table 28.1 for the electron density of iron and Equation 28.3, th

Stevens - PEP - 112

THEELECTRIC POTENTIAL29.1. Model: The mechanical energy of the proton is conserved. A parallel plate capacitor has a uniformelectric field. Visualize:After Before*. .,v=oE`*II01.ox2.0The figure shows the before-and-after pictorial represe

Stevens - PEP - 112

POTENTIAL AND FIELD30.1. Solve: The potential difference AV between two points in space is9AV = V(xf) - V(x,) = - I E , dxx,where x is the position along a line from point i to point f. When the electric field is uniform,xrAV = - E x j d . =-E,&X,

Stevens - PEP - 112

FUNDAMENTALS OF CIRCUITS31.1. Solve: From Table 30.1, the resistivity of carbon is p = 3.5 xof lead from a mechanical pencil isR m. From Equation 31.3, the resistance= 5.5 Rp~ p~ R=-=-= A m '(3.5 x lo-'R m)(0.06 m)n(0.35~10-'m)'31.2. Solve:(a) F

Stevens - PEP - 112

THE MAGNETIC FIELD32.1. Model: A magnetic field is caused by an electric current.Visualize: Please refer to Figure Ex32.1. Solve: Because the north poles of the magnets point counterclockwise, the magnetic force is counterclockwise. When you point finge

Stevens - PEP - 112

ELECTROMAGNETIC INDUCTION33.1. Model: Assume the magnetic field is uniform.Visualize: Please refer to Figure Ex33.1. Since a motional emf was developed the field must be perpendicular to V .The positive charges experienced a magnetic force to the left.

Stevens - MA - MA221

Ma 221 Homework Solutions Spring 2009 Due January 15/16, 20091.2 p.14 #1, 3, 5, 6, 7, 9, 8 1. dy (a) Show that x 2x 3 is an explicit solution to x dx 3y on the interval -, . Differentiating x gives: x 6x 2 Substituting and for y and y : dy x dx 3y xy 3y

Stevens - MA - MA221

Ma 221 Homework Solutions Spring 2009 Due January 20, 20091.2 p.14 # 4, 9, 11, 15, 20b, 21b, 22a,b (The underline denotes the problems that are handed in as part of the HW) In problem 4, determine whether the given function is a solution to the given dif

Stevens - MA - MA221

Ma 221 Homework Solutions Due Date: January 22-23, 20092.2 pg. 46 # 1, 4, 5, 7, 9, 11, 15, 17, 19, 21, 22, 23, 25 (Underlinedproblems are not handedin) In problems 1, 4 and 5, determine whether the given differential equation is separable. 1)dy dx 2y 3

Stevens - MA - MA221

MA 221 Homework Solutions Due date: Tuesday, January 27, 2009pg. 65 Sec. 2.4 # 9, 11, 13, 15, 17, 19, 23, 25, 27a, 29 (Underlined Problems are not turned in) In problems 9, 11, 13, 15, 17 and 19, determine whether the equation is exact. If it is, then so

Stevens - MA - MA221

Ma 221 Homework Solutions Due date: January 30, 20092.6 p.79 #21, 23, 28; 4.2 p.167 #1, 3, 7, 9, 17, 26, 27 29 (For 27 & 29 you may use the Wronskian.) (Underlined Problems are not handed in) 2.6 p.79 # 21, 23, 28 For 21, 23 and 28 use the method discuss

Stevens - MA - MA221

MA 221 Homework Solutions Due Thursday/ Friday, February 5/6, 20094.2 p. 167-169 # 19, 47 4.3 p. 177 #26 4.4 p. 186 # 19 (Underlined problems are to be handed in) Section 4.2 For problem 19, solve the given initial value problem. 19.) y - 4y - 5y 0, y-1

Stevens - MA - MA221

MA 221 Homework Solutions Due date: Tuesday, February 10, 20094.4 pg. 186 # 5, 11, 12, 13, 15, 16, 21, 22 (Underlined Problems areto be handed in) In problems 5 determine whether the method or not the method of undetermined coefficients can be applied to

Stevens - MA - MA221

MA 221 Homework Solutions Due date: February 17, 2009Section 4.5 pg. 192 2b, 5, 7, 21, 27, 29 (Underlined Problems are to be handed in) 2.) Given that y 1 t 1/4 sin 2t is a solution to y 2y 4y cos 2t and that y 2 t t/4 - 1/8 is a solution to y 2y 4y t, u

Stevens - MA - MA221

MA 221 Homework Solutions Due date: February 19-20, 2009Section 4.6 pg 197-98: 1, 3, 11, 18, 21 Section 8.5 pg 460 1, 3, 5,15 to be handed in) (Underlined problems are Section 4.6 pg 197-98 1.) Find a general solution to the differential equation using v

Stevens - PEP - 112

MA 221 Homework Solutions Due date: February 24, 20097.2 pg. 359 # 1, 7, 9, 10, 15, 16, 17 handed in) (Underlined problems are to be In problems 1, 7 and 9, use Definition 1 to determine the Laplace transform of the given function. 1.) t Lts 0 e -st dt

Stevens - MA - MA221

MA 221 Homework Solutions Due date: February 26/27, 20097.3 p. 365 #1, 3, 11, 21, 25a,b, 31, 33; be (Underlined problems are to turned in) For problems 1, 3 and 11, determine the Laplace transform of the given function using Table 7.1 and the properties

Stevens - MA - MA221

MA 221 Homework Solutions Due date: March 3, 20097.4 pg. 374 # 1, 3, 5, 7, 9, 12, 15, 17, 21, 23 are be (Underlined problems to handed in) For problems 1,3, 5, 7, and 9, determine the inverse Laplace transform of the given function. 6 1.) s-1 4 From tabl

Stevens - MA - MA221

MA 221 Homework Solutions Due date: March 5/6, 20097.5 p. 383 #1, 3, 5, 6, 7, 15, 17, 19 (Underlined problems to behanded in) are For problems 1, 3, 5, and 6, solve the given initial value problem using the method of Laplace transforms.1.) y - 2y 5y 0;

Stevens - MA - 227

MA 221 Homework Solutions Due date: March 17, 2009Section 8.2 pg. 438 # 1, 2, 5, 6 (Underlined problems are to be handed in) 2 -n 1.) n0 n1 x - 1 n 2 -n1 /n 2 n1 lim aa n lim 1 L n n 2 2 -n /n 1 p 1 2 L The endpoints of the interval of convergence are x1

Stevens - PEP - 112

MA 221 Homework Solutions Due date: March 24, 20098.3 p. 449 #1, 3, 5, 7, 11, 12, 15, 17, 19, 21,25 27 be (Underlined problems are to handed in) In problems 1, 3, 5 and 7 Determine all the singular points of the given differential equations. 1.) x 1y - x

Stevens - MA - MA221

MA 221 Homework Solutions Due date: March 26/27, 2009Page 671 Section 11.2 Problems 1, 3, 5, 6, 13, 15, 17 and 19 (Underlined problems are to be handed in) In problems 1, 3, 5 and 6 determine the solutions, if any, to the given boundary problem. 1.) y 2y

Stevens - MA - MA221

MA 221 Homework Solutions Due date: March 31, 200910.4, pg. 611 # 5, 6, 7, 9, 11, 13, 15 (Underlined Problems are to behanded in) In problems 5, 6, 7 and 9, compute the Fourier sine series for the given function 5.) fx -1 0x1 fx b n sin nx Tn1where b

Stevens - MA - MA221

MA 221 Homework Solutions Due date: April 2/3, 2009Sec 10.2 Problems #19, 20, 22 Sec 10.6 Problem #3 Section 10.2Solve the vibrating string problem with 3, L , and the given initial functions fx and gx. 19.) fx 3 sin 2x 12 sin 13x, gx 0 By letting 3 an

Stevens - MA - MA221

MA 221 Homework Solutions Due date: April 7, 2009Section 10.6 Problems 5, 9, 11 (Underlined problems are to be handed in) 0 x a, 5.) fx h 0 x/a, fx h 0 L - x/L - a, axL and g0 0 The problem is consistent because g0 0 gL and f0 0 fL The formal solution is

Stevens - MA - MA221

MA 221 Homework Solutions Due date: April 14, 2009Section 10.2, #27 & 29 (Underlined Problems are to be handed in) 27.) 2 u 1 u 1 2 u 0 r r r 2 r 2 2 with ur, RrT. Subsituting into the PDE we get R T 1 R T - 1 RT r r2 or r 2 R rR - T R T since the left

Stevens - MA - MA221

MA 221 Homework Solutions Due date: April 16/17, 2009Section 10.4: 6, 8 Section10.5: 1, 3, 5 (Underlined problems are to be handed in) 6.) fx cos x 0x Here T fx b n sin nx Tn1where b n 2 T 0 fx sin nx dx TT2 bn Substituting fx 8.) fx - x 2 0x fx 2

Stevens - PEP - 112

MasteringPhysics: Assignment Print ViewIntroduction to Faraday's LawLearning Goal: To understand the terms in Faraday's law for magnetic induction of electric fields, and contrast these fields with those produced by static charges. Faraday's law describ

Rochester - PHY - 122

Rochester - PHY - 121

Chapter 1CHAPTER 1 - Introduction, Measurement, Estimating 1. (a) Assuming one significant figure, we have 1 1010 yr. 10 billion yr = 10 109 yr = 10 yr)(3 107 s/yr) = 17 s. 3 10 (b) (1 10 (a) (b) (c) (d) (e) (f) (g) (a) (b) (c) (d) (e) (f) (a) (b) (c) (d

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[Index to the Anarchist Cookbook IV, ver. 4.14]COOKBOOK.IV: 001: 002: 003: 004: 005: 006: 007: 008: 009: 010: 011: 012: 013: 014: 015: 016: 017: 018: 019: 020: 021: 022: 023: 024: 025: 026: 027: 028: 029: 030: 031: 032: 033: 034: 035: 036: 037: 038: 039:

Rochester - CHM - 231

Karen Horovitz CHM231 Expt 1: Mathcad Introduction: Computers are often used both to acquire and analyze data from chemical instruments that measure physical properties. While a chemistry workstation may be connected to a commercial instrument such as an

Rochester - PHY - 122

Physics 122 Assignment 1Fall 2009Individual and Workshop Problems are due at 12:00 pm, Wednesay, September 16, in the locker near the door of B&L 106. Note to look for your TA/TI's name on the locker. Reading Assignment: Read Giancoli Chapter 21-22. Wor

Rochester - CHM - 231

Karen Horovitz 17 September 2009 CHM 231 Expt 2: Flash Lamps Flash lamps are used in order to excite samples with light, and a computer will detect the signal from scattered light. In the future, this will be used in order to measure the phosphorescence l

Rochester - CHM - 231

Karen Horovitz 7 September 2009 CHM231 Expt 1: Mathcad Computers are used to both acquire and analyze data from all chemical instruments that measure physical properties. Learning about the way a PC works as well as its components will aid in understandin

Rochester - CHE - 280

CHE280/480 and MSC 431 Suggested Answer Keys to HW#2 1. List TWO techniques that can be used to study the follwing preperties: 1) crystal phase, 2) local environments such as valence and coordination of a defect atom, 3) oxidation state of an atom in a la

UGA - JRLC - JRLC 5040

Chapter One US v. Miller: New York Times reporter jailed for refusing to testify in the Supreme Court in order not to reveal her sources - The governments need to investigate crimes outweighs the need of a journalist to protect her sources The Law of the

Cornell - AEM - 4280

Market EfficiencyAEM 428 Manny DongSome materials from Smart et al.Inauguration Day (1/20/2009)Market Index Value Dow 7949.09 Nasdaq 1440.86 SP500 805.22 Change -332.13 -88.47 -44.9 Change% -4.01 -5.78 -5.28IS Market Efficient?Inauguration Day (1/20

Cornell - AEM - 4280

Reminds:Course Blackboardhttp:/blackboard.cornell.edu/AEM 428: Valuation of Capital InvestmentCourse participationYahoo Posts Loss as New Chief Plots Strategy WSJ, January 28, 2009Reported a net loss of $303.4 million (-$.22 a share), compared with

Cornell - AEM - 4280

AnnouncementsProblem set 1 due today. Problem set 2 is ready to pick up or download.09/22/09Super Bowl Stcok by Laura Cohn 1/30/2009 at www.yahool.comThe Super Bowl theory: Dow up if original member of NFL wins Dow down if original member of AFL wins

Cornell - AEM - 4280

Limits to ArbitrageAEM 428 Manny DongMaterials from Rosenthal & Young 1990; Froot & Dabora (1999) and Ming Huang's notesWhat form Of MEH? What Does It Tell Us?Will January Be the Cruelest Month?WSJ 1/26/09Limits to Arbitrage Valuation and arbitrag

Cornell - AEM - 4280

Reminds:Course Blackboardhttp:/blackboard.cornell.edu/AEM 428: Valuation of Capital InvestmentCourse participationYahoo Posts Loss as New Chief Plots Strategy WSJ, January 28, 2009Reported a net loss of $303.4 million (-$.22 a share), compared with

Cornell - AEM - 4280

Short Selling and Short Interest (How Smart Are the Bears?)AEM 428 Manny DongMaterials from Charles Lee (2003) & Bhaskaran Swaminathan (2005)SEC's Action on Financial CrisisOn September 18, 2008, the SEC imposed a ban until Sep. 30, 2008, on short sal

Cornell - AEM - 3440

Cornell - AEM - 3440

Cornell - AEM - 240

AEM 240 Fall 2007Marketing Prof. McLaughlinMultiple Choice(33 questions, 80 points) 1. Cellular telephone vendors often charge little or nothing for the phone if this leads to a telephone service contract. When behaving this way, they create custome

Cornell - AEM - 240

Armand HershowitzAEM 240Prelim 1 ReviewChapter 1: Creating Customer Relationships and Value through Marketing Marketing: A social process by which individuals and groups obtain what they need and want through creating and exchanging products and value

Cornell - AEM - 240

AEM 240 Fall 2007Marketing Prof. McLaughlinMultiple Choice(33 questions, 80 points) 1. Several years ago, Black & Decker purchased General Electric's small appliances product line. Black & Decker purchased the line because it needed the cash infusio

Cornell - AEM - 240

Marketing- Chapter 1 Marketing- an organizational function and a set of processes for creating, communicating, and delivering value to customers and for managing customer relationships in ways that benefit the organization and its stakeholders. > Exchange

Cornell - AEM - 240

Test #_Section #_AEM 221 Financial Accounting Prelim #2 Fall 2005 Version 2Name _ Email Address _ 1. This exam consists of 15 multiple choice questions and four problems. There are 13 pages in this packet, including this cover page; please ensure that

Cornell - AEM - 2500

1. Standard Economic valuation system: anthropocentric view value that humans place on species and ecosystems. a. Use value direct, indirect and altruistic value b. Option value c. Existence value (bequest, intrinsic) 2. A characteristic feature of the ec