Solutions Manual

1 Solutions ManualA Glencoe ProgramStudent EditionTeacher Wraparound EditionTeacher Chapter ResourcesMini Lab WorksheetsPhysics Lab WorksheetsStudy Guide Section QuizzesReinforcementEnrichment Transparency MastersTransparency WorksheetsChapter AssessmentTeacher Classroom ResourcesTeaching Transparencies Laboratory Manual , Student Edition Laboratory Manual , Teacher EditionProbeware Laboratory Manual , StudentEditionProbeware Laboratory Manual , TeacherEditionForensics Laboratory Manual , StudentEditionForensics Laboratory Manual , TeacherEditionSupplemental ProblemsAdditional Challenge ProblemsPre-AP/Critical Thinking ProblemsPhysics Test Prep: Studying for the End-of-Course Exam, Student EditionPhysics Test Prep: Studying for the End-of-Course Exam, Teacher EditionConnecting Math to PhysicsSolutions Manual TechnologyAnswer Key MakerExamView ProInteractive ChalkboardMcGraw-Hill Learning NetworkStudentWorks CD-ROMT eacherWorks siteCopyright by The McGraw-Hill Companies, Inc.

2 All rights reserved. Permission is granted to reproduce the material contained herein on the condition that such material be repro-duced only for classroom use; be provided to students, teachers, and families without charge; and be used solely in conjunction with the physics : Principles and Problemsprogram. Any other reproduction, for use or sale, is prohibited without prior written permissionof the all inquiries to:Glencoe/McGraw-Hill8787 Orion PlaceColumbus, Ohio 43240 ISBN 0-07-865893-4 Printed in the United States of America1 2 3 4 5 6 7 8 9 045 09 08 07 06 05 04To the Teacher .. ivChapter 1A physics Toolkit .. 1 Chapter 2 Representing Motion.

3 15 Chapter 3 Accelerated Motion .. 29 Chapter 4 Forces in One Dimension .. 61 Chapter 5 Forces in Two Dimensions .. 87 Chapter 6 Motion in Two Dimensions .. 115 Chapter 7 Gravitation .. 141 Chapter 8 Rotational Motion .. 169 Chapter 9 Momentum and Its Conservation .. 193 Chapter 10 Energy, Work, and Simple Machines .. 225 Chapter 11 Energy and Its Conservation .. 247 Chapter 12 Thermal Energy .. 271 Chapter 13 States of Matter .. 287 Chapter 14 Vibrations and Waves .. 311 Chapter 15 Sound .. 329 Chapter 16 Fundamentals of Light .. 345 Chapter 17 Reflection and Mirrors .. 357 Chapter 18 Refraction and Lenses.

4 377 Chapter 19 Interference and Diffraction .. 399 Chapter 20 Static Electricity .. 413 Chapter 21 Electric Fields .. 427 Chapter 22 Current Electricity .. 445 Chapter 23 Series and Parallel Circuits .. 463 Chapter 24 Magnetic Fields .. 485 Chapter 25 Electromagnetic Induction .. 501 Chapter 26 Electromagnetism .. 517 Chapter 27 Quantum Theory .. 531 Chapter 28 The Atom .. 545 Chapter 29 Solid-State Electronics .. 559 Chapter 30 Nuclear physics .. 573 Appendix BAdditional Problems .. 591 ContentsCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, : Principles and ProblemsContentsiiiivTo the TeacherPhysics: Principles and ProblemsTo the TeacherCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Solutions Manualis a comprehensive guide to the questions and problems in the Student Edition ofPhysics: Principles and includes the Practice Problems, Section Reviews, Chapter Assessments,and Challenge Problems for each chapter, as well as the Additional Problems that appear in Appendix Bof the Student Edition.

5 The Solutions Manualrestates every question and problem so that you do not haveto look back at the text when reviewing problems with students. physics : Principles and ProblemsSolutions Manual1 Copyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, physics ToolkitCHAPTERP ractice and Physicspages 3 10page 5 For each problem, give the rewritten equation youwould use and the lightbulb with a resistance of ohmsis used in a circuit with a is the current through the bulb? I RV object with uniform acceleration a,starting from rest, will reach a speed of vin time taccording to the formula v is the acceleration of a bicyclist whoaccelerates from rest to 7 m/s in 4 s?

6 A vt 74ms/s long will it take a scooter acceleratingat m/s2to go from rest to a speed m/s?t va pressure on a surface is equal to theforce divided by the area: P F/A. A 53-kg woman exerts a force (weight) of 520 Newtons. If the pressure exerted on the floor is 32,500 N/m2, what is the areaof the soles of her shoes?A PF 32,550200NN/m2 m2page 7 Use dimensional analysis to check your equationbefore many megahertz is 750 kilohertz?750 kHz 1010k0 HHzz 1,0010M,0H00zHz 5021 centimeters to kilometers. 5021 cm 1010mcm 1100k0mm 10 many seconds are in a leap year? 366 days 124dahy 601mhin 16m0sin 31,622,400 s the speed m/s to km/h.

7 16m0sin 601mhin 1100k0mm km/hpage 8 Solve the following problems. 9. cm cm cm cm cm cm after km m 1200 cm km m m1200 cm m 1600 m or km after rounding 10.. 8 g g g g after m m m after rounding11. cm cm 320 cm2or km km212. g 11 . 3 m g g/cm3 Section and Physicspages 3 10page are concepts in physicsdescribed with formulas? The formulas are concise and can beused to predict new force of a magnetic fieldon a charged, moving particle is given by F Bqv,where Fis the force in kg m/s2, qisthe charge in A s, and vis the speed in the strength of the magnetic field, measured in teslas, T.

8 What is 1 tesladescribed in base units? F Bqv, so B qFv T Ak gs2 1 T 1kg/A proton with 10 19A s is moving at 105m/sthrough a magnetic field of T. You wantto find the force on the the values into the equationyou will use. Are the units correct? F Bqv ( kg/A s2)( 10 19A s) ( 105m/s)Force will be measured in kg m/s2,which is values are written in scientific notation, m 10n. Calculate the 10npartof the equation to estimate the size ofthe answer. 10 19 105 10 14; the answer willbe about 20 10 14,or 2 10 your answer. Check it againstyour estimate from part 10 13kg the number of significant digitsin your answer. The least-precise value is T, with2 significant digits, so the answer isrounded to 2 significant F Bqvto find vinterms of F, q ,and BFq ThinkingAn accepted value forthe acceleration due to gravity is an experiment with pendulums, you calculate that the value is m/s2.

9 Shouldthe accepted value be tossed out to accom-modate your new finding? The value m/s2has beenestablished by many other experiments,and to discard the finding you wouldhave to explain why they were are probably some factors affecting your calculation, such as friction and how precisely you can measure the different m/s2 (A s)(m/s)2 Solutions ManualPhysics: Principles and ProblemsCopyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, 1 continuedPhysics: Principles and ProblemsSolutions Manual3 Copyright Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, 11 14page wooden rulers do not startwith 0 at the edge, but have it set in a fewmillimeters.

10 How could this improve theaccuracy of the ruler? As the edge of the ruler gets worn awayover time, the first millimeter or two ofthe scale would also be worn away ifthe scale started at the find a micrometer (a tool usedto measure objects to the nearest mm)that has been badly bent. How would itcompare to a new, high-quality meterstickin terms of its precision? Its accuracy? It would be more precise but less parallax affect the precisionof a measurement that you make? , it doesn t change the fineness ofthe divisions on its friend tells you that his heightis 182 cm. In your own words, explain therange of heights implied by this statement.