Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #03: Homework #01page 1 of 5PHYS 122: Homework #01January 12, 2009Homework #01 is due in Box outside of Rock 207: 5:00 PM Sharp, Wednesday, January 21, 2009 Announcements: Be sure you read all course Handouts for toda

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #06: Homework #02page 1 of 6PHYS 122: Homework #02January 21, 2009Homework #02 is due in Box outside of Rock 207: 5:00 PM Sharp, Monday, January 26, 2009 Announcements: Note that the due date on this homework comes up

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #07: Homework #03page 1 of 9PHYS 122: Homework #03January 26, 2009Homework #03 is due in Box outside of Rock 207: 5:00 PM Sharp, Monday, February 2, 2009 Announcements: Mr. Covault's Office Hours will generally be Mon

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #11: Homework #04page 1 of 7PHYS 122: Homework #04February 8, 2009Homework #04 is due in Box outside of Rock 207: 5:00 PM Sharp, Monday, February 16, 2009 Announcements: Mr. Covault's Office Hours will generally be Mo

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #15: Homework Assignment #05page 1 of 10PHYS 122: Homework Assignment #05February 16, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday, February 23, 2009Announcements: Please pick up your graded

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #16: Homework Assignment #06page 1 of 9PHYS 122: Homework Assignment #06February 23, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday, March 2, 2009Announcements: The Second Hour Exam is schedul

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #18: Eighth Homework Assignmentpage 1 of 8PHYS 122: Eighth Homework AssignmentMarch 18, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday, March 23, 2009 Announcements: Don't forget: Special Home

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #20: Nineth Homework Assignmentpage 1 of 7PHYS 122: Nineth Homework AssignmentMarch 24, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday March 30, 2009 Announcements: Third Hour Exam is Friday,

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #21: Tenth Homework Assignmentpage 1 of 8PHYS 122: Tenth Homework AssignmentMarch 31, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday April 6, 2009 Announcements: Third Hour Exam is Friday, Apr

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2008 Document #22: Eleventh Homework Assignmentpage 1 of 6PHYS 122: Eleventh Homework AssignmentApril 12, 2009This homework due in Box outside of Rock 207: 5:00 PM Sharp, Monday, April 20, 2009 Announcements: This is the penultimat

Case Western Reserve University - PHYS - 122

Physics 122 Spring 2009 Document #25: Homework Assignment #12page 1 of 2PHYS 122: Homework Assignment #12April 13, 2009This homework due by Email before: 5:00 PM Sharp, Monday, April 27, 2007 Announcements: This is the final homework. It includes onl

Lehigh - PHYS - 122

Physics 122 Spring 2009 Document #05: Cycle 1 Review Sheetpage 1 of 14PHYS 122: Cycle 1 Review SheetJanuary 14, 2009 SLIGHTLY UPDATED January 30, 2009This Review Sheet delineates all main topics that students will be responsible for for the First Hour

Lehigh - PHYS - 122

Physics 122 Spring 2009 Document #12: Cycle 2 Review Sheetpage 1 of 10PHYS 122: Cycle 2 Review SheetFebruary 8, 2009Cycle 1 Materials Physics is a cumulative subject and the this is especially so for the Cyclic approach. Therefore is it explicitly the

Lehigh - PHYS - 122

Physics 122 Spring 2009 Document #19: Cycle 3A Review Sheetpage 1 of 13PHYS 122: Cycle 3A Review SheetMarch 16, 2009 Cycle 1 and Cycle 2 Materials Physics is a cumulative subject and the this is especially so for the Cyclic approach. Therefore is it ex

Lehigh - PHYS - 122

Physics 122 Spring 2009 Document #23: Cycle 3B Review Sheetpage 1 of 10PHYS 122: Cycle 3B Review SheetSlightly revised to fix inversion of refraction rule, May 2, 2009 The Electromagnetic Spectrum: Included here as a reference is a nice graphic represe

University of Michigan-Dearborn - 01 - cis384

Guide to Networking Essentials, 5th ed., 14188-37180 Ch. 3Solutions-1Chapter 3 SolutionsReview Questions1. 2. Of the following cabling elements, which does not commonly occur in coaxial cable? d. cladding Which of the following is a common media chara

Michigan - ME - 240

Problem 18.1 A horizontal force F = 133.4 N is applied to the 1023 N refrigerator as shown. Friction is negligible. (a) (b) What is the magnitude of the refrigerators acceleration? What normal forces are exerted on the refrigerator by the oor at A and B ?

Michigan - ME - 240

Problem 20.1 The airplanes angular velocity relative to an earth-xed reference frame, expressed in terms of the body-xed coordinate system shown, is = 0.62i + 0.45j 0.23k (rad/s). The coordinates of point A of the airplane are (3.6, 0.8, 1.2) m. What is t

Michigan - ME - 240

Problem 12.1 The value of is 3.1415962654. . . . . If C is the circumference of a circle and r is its radius, determine the value of r/C to four signicant digits.Solution:C = 2 r 1 r = = 0.159154943. C 2 r = 0.1592 CTo four signicant digits we havePro

Michigan - ME - 240

Problem 14.1 In Active Example 14.1, suppose that the coefcient of kinetic friction between the crate and the inclined surface is k = 0.12. Determine the distance the crate has moved down the inclined surface at t = 1 s.20Solution: There are three unkno

Michigan - ME - 240

Problem 16.1 The 20-kg crate is stationary at time t = 0. It is subjected to a horizontal force given as a function of time (in newtons) by F = 10 + 2t 2 . Determine the magnitude of the linear impulse exerted on the crate from t = 0 to t = 4 s. (b) Use t

Michigan - ME - 240

Problem 13.1 In Example 13.2, suppose that the vehicle is dropped from a height h = 6m. (a) What is the downward velocity 1 s after it is released? (b) What is its downward velocity just before it reaches the ground?Solution: The equations that govern th

Michigan - ME - 240

Problem 15.1 In Active Example 15.1, what is the velocity of the container when it has reached the position s = 2 m?AsSolution: The 180-kg container A starts from rest at s = 0. The horizontal force (in newtons) is F = 700 150s . The coefcient of kinet

Michigan - ME - 240

Problem 17.1 In Active Example 17.1, suppose that at a given instant the hook H is moving downward at 2 m/s. What is the angular velocity of gear A at that instant?200 mm 50 mm A B 100 mmSolution: The angular velocity of gear B isB = vH 2 m/s = = 20 ra

Michigan - ME - 240

Problem 19.1 The moment of inertia of the rotor of the medical centrifuge is I = 0.2 kg-m2 . The rotor starts from rest and the motor exerts a constant torque of 0.8 N-m on it. How much work has the motor done on the rotor when the rotor has rotated throu

Michigan - ME - 240

Problem 21.1 In Active Example 21.1, suppose that the pulley has radius R = 100 mm and its moment of inertia is I = 0.005 kg-m2 . The mass m = 2 kg, and the spring constant is k = 200 N/m. If the mass is displaced downward from its equilibrium position an

Punjab Engineering College - ECON - ECON111

Chapter 7Hypothesis Tests and Confidence Intervals in Multiple RegressionSolutions to Exercises1. Regressor College (X1) Female (X2) Age (X3) Ntheast (X4) Midwest (X5) South (X6) Intercept 12.69* (0.14) 4.40* (1.05) (1) 5.46* (0.21) 2.64* (0.20) (2) 5.

Punjab Engineering College - ECON - ECON111

PART TWO Solutions to Empirical ExercisesChapter 3Review of StatisticsSolutions to Empirical Exercises1. (a) Average Hourly Earnings, Nominal $'s Mean AHE1992 AHE2004 AHE2004 - AHE1992 (b) Average Hourly Earnings, Real $2004 Mean AHE1992 AHE2004 AHE20

Punjab Engineering College - ECON - ECON111

Chapter 5Regression with a Single Regressor: Hypothesis Tests and Confidence IntervalsSolutions to Empirical Exercises1. (a) AHE = 3.32 + 0.45 Age (0.97) (0.03) The t-statistic is 0.45/0.03 = 13.71, which has a p-value of 0.000, so the null hypothesis

Punjab Engineering College - ECON - ECON111

Chapter 6Linear Regression with Multiple RegressorsSolutions to Empirical Exercises1. Regressions used in (a) and (b) Model Regressor Beauty Intro OneCredit Female Minority NNEnglish Intercept SER 2 R a 0.133 b 0.166 0.011 0.634 0.173 0.167 0.244 4.07

Punjab Engineering College - ECON - ECON111

Chapter 7Hypothesis Tests and Confidence Intervals in Multiple RegressionSolutions to Empirical Exercises1. Estimated Regressions Model Regressor Age Female Bachelor Intercept 3.32 (0.97) 8.66 0.023 0.022 7.88 0.190 0.190 a 0.45 (0.03) b 0.44 (0.03) 3.

Punjab Engineering College - ECON - ECON111

Chapter 13Experiments and Quasi-ExperimentsSolutions to Empirical Exercises1. The following table provides answers to (a)(c) Dependent Variable = Call_Back Regressor Black Female Black High High Black Intercept 0.097* (0.006) 0.097* (0.006) 0.073* (0.0

Punjab Engineering College - ECON - ECON111

Chapter 4Linear Regression with One RegressorSolutions to Exercises1.(a) The predicted average test score is(b) The predicted change in the classroom average test score isTestScore = (-5.82 19) - (-5.82 23) = 23.28 ^ (c) Using the formula for 0 in E

Punjab Engineering College - ECON - ECON111

Chapter 5Regression with a Single Regressor: Hypothesis Tests and Confidence IntervalsSolutions to Exercises1 (a) The 95% confidence interval for 1 is cfw_-5.82 1.96 2.21, that is -10.152 1 -1.4884. (b) Calculate the t-statistic: t act = ^ 1 - 0 -5.82

Punjab Engineering College - ECON - ECON111

Chapter 6Linear Regression with Multiple RegressorsSolutions to Exercises1. By equation (6.15) in the text, we know R2 = 1 n 1 (1 R 2 ). n k 1Thus, that values of R 2 are 0.175, 0.189, and 0.193 for columns (1)(3). 2. (a) Workers with college degrees

Punjab Engineering College - ECON - ECON111

Chapter 4Linear Regression with One RegressorSolutions to Empirical Exercises1. (a) AHE = 3.32 + 0.45 Age Earnings increase, on average, by 0.45 dollars per hour when workers age by 1 year. (b) Bobs predicted earnings = 3.32 + 0.45 26 = $11.70 Alexiss

Punjab Engineering College - ECON - ECON111

Punjab Engineering College - ECON - ECON111

Punjab Engineering College - ECON - ECON111

Punjab Engineering College - ECON - ECON111

Chapter 8Nonlinear Regression FunctionsSolutions to Exercises1. (a) The percentage increase in sales is 100 198196196 = 1.0204%. The approximation is 100 [ln (198) ln (196)] = 1.0152%. (b) When Sales2002 = 205, the percentage increase is 100 205196196

Punjab Engineering College - ECON - ECON111

Chapter 9Assessing Studies Based on Multiple RegressionSolutions to Exercises1. As explained in the text, potential threats to external validity arise from differences between the population and setting studied and the population and setting of interes

Punjab Engineering College - ECON - ECON111

Chapter 10Regression with Panel DataSolutions to Exercises1. (a) With a $1 increase in the beer tax, the expected number of lives that would be saved is 0.45 per 10,000 people. Since New Jersey has a population of 8.1 million, the expected number of li

Punjab Engineering College - ECON - ECON111

Chapter 13Experiments and Quasi-ExperimentsSolutions to Exercises1. For students in kindergarten, the estimated small class treatment effect relative to being in a regular class is an increase of 13.90 points on the test with a standard error 2.45. The

Punjab Engineering College - ECON - ECON111

PART ONE Solutions to Chapter ExercisesChapter 2Review of ProbabilitySolutions to Exercises1. (a) Probability distribution function for Y Outcome (number of heads) probability Y=0 0.25 Y=1 0.50 Y=2 0.25(b) Cumulative probability distribution function

Punjab Engineering College - ECON - ECON111

Chapter 3Review of Statistics Review the ConceptsSolutions to Exercises1. The central limit theorem suggests that when the sample size ( n ) is large, the distribution of the2 2 sample average ( Y ) is approximately N Y , Y with Y = 2 Y = 43.0, we hav

Punjab Engineering College - ECON - ECON111

CHAPTER 21POLITICAL ECONOMICSThe problems in this final chapter are of two general types. First are four problems in traditional welfare economics (Problems 21.121.3 and 21.5) that illustrate various issues that arise in comparing utility among individu

Punjab Engineering College - ECON - ECON111

CHAPTER 2THE MATHEMATICS OF OPTIMIZATIONThe problems in this chapter are primarily mathematical. They are intended to give students some practice with taking derivatives and using the Lagrangian techniques, but the problems in themselves offer few econo

Punjab Engineering College - ECON - ECON111

CHAPTER 3PREFERENCES AND UTILITYThese problems provide some practice in examining utility functions by looking at indifference curve maps. The primary focus is on illustrating the notion of a diminishing MRS in various contexts. The concepts of the budg

Punjab Engineering College - ECON - ECON111

CHAPTER 4UTILITY MAXIMIZATION AND CHOICEThe problems in this chapter focus mainly on the utility maximization assumption. Relatively simple computational problems (mainly based on CobbDouglas and CES utility functions) are included. Comparative statics

Punjab Engineering College - ECON - ECON111

CHAPTER 5INCOME AND SUBSTITUTION EFFECTSProblems in this chapter focus on comparative statics analyses of income and own-price changes. Many of the problems are fairly easy so that students can approach the ideas involved in shifting budget constraints

Punjab Engineering College - ECON - ECON111

CHAPTER 6DEMAND RELATIONSHIPS AMONG GOODSTwo types of demand relationships are stressed in the problems to Chapter 6: cross-price effects and composite commodity results. The general goal of these problems is to illustrate how the demand for one particu

Punjab Engineering College - ECON - ECON111

CHAPTER 7PRODUCTION FUNCTIONSBecause the problems in this chapter do not involve optimization (cost minimization principles are not presented until Chapter 8), they tend to have a rather uninteresting focus on functional form. Computation of marginal an

Punjab Engineering College - ECON - ECON111

CHAPTER 8COST FUNCTIONSThe problems in this chapter focus mainly on the relationship between production and cost functions. Most of the examples developed are based on the Cobb-Douglas function (or its CES generalization) although a few of the easier on

Punjab Engineering College - ECON - ECON111

Chapter 8Strategy and Game TheoryGame Theory Game theory studies strategic interactions Game theory models portray complex strategic situations in a highly simplified and stylized setting abstract from personal and institutional details to get a mathem

Punjab Engineering College - ECON - ECON111

Chapter 8Strategy and Game TheoryGame Theory Game theory studies strategic interactions Game theory models portray complex strategic situations in a highly simplified and stylized setting abstract from personal and institutional details to get a mathem

Punjab Engineering College - ECON - ECON111

CHAPTER 9PROFIT MAXIMIZATIONProblems in this chapter consist mainly of applications of the P = MC rule for profit maximization by a price-taking firm. A few of the problems (9.29.5) ask students to derive marginal revenue concepts, but this concept is n

Punjab Engineering College - ECON - ECON111

Chapter 9Production FunctionsProduction Function The firms production function for a particular good (q) shows the maximum amount of the good that can be produced using alternative combinations of capital (k) and labor (l)q = f(k,l)Marginal Physical

Punjab Engineering College - ECON - ECON111

CHAPTER 10THE PARTIAL EQUILIBRIUM COMPETITIVE MODELThe problems in this chapter focus on competitive supply behavior in both the short and long runs. For short-run analysis, students are usually asked to construct the industry supply curve (by summing f

Punjab Engineering College - ECON - ECON111

Chapter 10Cost FunctionsDefinitions of Costs Accounting and economic costs are different Accountants stress out-of-pocket expenses, depreciation, and other bookkeeping entries economists focus more on opportunity cost Labor Costs to accountants, labor

Punjab Engineering College - ECON - ECON111

CHAPTER 11APPLYING THE COMPETITIVE MODELThe problems in this chapter are intended to illustrate the types of calculations made using simple competitive models for applied welfare analysis. Usually the problems start from a supply-demand framework much l

Punjab Engineering College - ECON - ECON111

Chapter 11Profit MaximizationThe Nature of Firms A firm is an association of individuals who have organized themselves for the purpose of turning inputs into outputs Different individuals will provide different types of inputs the nature of the contrac