SOLUTIONS MANUAL SEARS & ZEMANSKY’S UNIVERSITY PHYSICS 15TH EDITION WAYNE ANDERSON A. LEWIS FORD

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No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. iii CONTENTS Preface ................................................................................................................. v Part I Mechanics Chapter 1 Units, Physical Quantities, and Vectors ............................................... 1-1 Chapter 2 Motion Along a Straight Line ................................................................ 2-1 Chapter 3 Motion in Two or Three Dimensions .................................................... 3-1 Chapter 4 Newton’s Laws of Motion ..................................................................... 4-1 Chapter 5 Applying Newton’s Laws ...................................................................... 5-1 Chapter 6 Work and Kinetic Energy...................................................................... 6-1 Chapter 7 Potential Energy and Energy Conservation ......................................... 7-1 Chapter 8 Momentum, Impulse, and Collisions .................................................... 8-1 Chapter 9 Rotation of Rigid Bodies....................................................................... 9-1 Chapter 10 Dynamics of Rotational Motion .......................................................... 10-1 Chapter 11 Equilibrium and Elasticity ................................................................... 11-1 Chapter 12 Fluid Mechanics ................................................................................. 12-1 Chapter 13 Gravitation .......................................................................................... 13-1 Chapter 14 Periodic Motion .................................................................................. 14-1 Part II Waves/Acoustics Chapter 15 Mechanical Waves ............................................................................. 15-1 Chapter 16 Sound and Hearing ............................................................................ 16-1 Part III Thermodynamics Chapter 17 Temperature and Heat ....................................................................... 17-1 Chapter 18 Thermal Properties of Matter ............................................................. 18-1 Chapter 19 The First Law of Thermodynamics ..................................................... 19-1 Chapter 20 The Second Law of Thermodynamics ............................................... 20-1iv Contents © Copyright 2020 Pearson Education, Inc. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. Part IV Electromagnetism Chapter 21 Electric Charge and Electric Field ...................................................... 21-1 Chapter 22 Gauss’s Law ....................................................................................... 22-1 Chapter 23 Electric Potential................................................................................. 23-1 Chapter 24 Capacitance and Dielectrics ............................................................... 24-1 Chapter 25 Current, Resistance, and Electromotive Force .................................. 25-1 Chapter 26 Direct-Current Circuits ........................................................................ 26-1 Chapter 27 Magnetic Field and Magnetic Forces ................................................. 27-1 Chapter 28 Sources of Magnetic Field .................................................................. 28-1 Chapter 29 Electromagnetic Induction .................................................................. 29-1 Chapter 30 Inductance .......................................................................................... 30-1 Chapter 31 Alternating Current ............................................................................. 31-1 Chapter 32 Electromagnetic Waves ..................................................................... 32-1 Part V Optics Chapter 33 The Nature and Propagation of Light ................................................. 33-1 Chapter 34 Geometric Optics................................................................................ 34-1 Chapter 35 Interference ........................................................................................ 35-1 Chapter 36 Diffraction ........................................................................................... 36-1 Part VI Modern Physics Chapter 37 Relativity ............................................................................................. 37-1 Chapter 38 Photons: Light Waves Behaving as Particles .................................... 38-1 Chapter 39 Particles Behaving as Waves ............................................................. 39-1 Chapter 40 Quantum Mechanics I: Wave Functions ............................................ 40-1 Chapter 41 Quantum Mechanics II: Atomic Structure........................................... 41-1 Chapter 42 Molecules and Condensed Matter ..................................................... 42-1 Chapter 43 Nuclear Physics.................................................................................. 43-1 Chapter 44 Particle Physics and Cosmology ........................................................ 44-1PREFACE This Instructor’s Solutions Manual contains the solutions to all the problems and exercises in University Physics, Fifteenth Edition, by Hugh Young and Roger Freedman. In preparing this manual, we assumed that its primary users would be college professors; thus the solutions are condensed, and some steps are not shown. Some calculations were carried out to more significant figures than demanded by the input data in order to allow for differences in calculator rounding. In many cases answers were then rounded off. Therefore, you may obtain slightly different results, especially when powers or trig functions are involved. This edition was constructed from the previous editions authored by Craig Watkins and Mark Hollabaugh, and much of what is here is due to them. Wayne Anderson Lewis Ford Sacramento, CA© Copyright 2020 Pearson Education, Inc. All rights reserved. This material is protected under all copyright laws as they currently exist. No portion of this material may be reproduced, in any form or by any means, without permission in writing from the publisher. 1-1 VP1.7.1. IDENTIFY: We know that the sum of three known vectors and a fourth unknown vector is zero. We want to find the magnitude and direction of the unknown vector. SET UP: The sum of their x-components and the sum of their y-components must both be zero. 0 A B C D x x x x + + + = 0 A B C D y y y y + + + = The magnitude of a vector is w A A A = + x2 2 y and the angle θ it makes with the +x-axis is arctan y x A A θ = . EXECUTE: We use the results of Ex. 1.7. See Fig. 1.23 in