University Physics with Modern Physics in SI Units, 15th Global Edition

Book Preface

In the years since it was first published, University Physics has always embraced change, not just to include the latest developments in our understanding of the physical world, but also to address our understanding of how students learn physics and how they study.

In preparing for this new Fifteenth Edition, we listened to the thousands of students who have told us that they often struggle to see the connections between the worked ex-amples in their textbook and problems on homework or exams. Every problem seems different because the objects, situations, numbers, and questions posed change with each problem. As a result, students experience frustration and a lack of confidence. By contrast, expert problem-solvers categorize problems by type, based on the underlying principles.

Several of the revisions we have made therefore address this particular challenge by, for example, helping students see the big picture of what each worked example is trying to illustrate and allowing them to practice sets of related problems to help them identify repeating patterns and strategies. These new features are explained in more detail below.

NEW TO THIS EDITION

• Worked example KEYCONCEPT statements appear at the end of every Example and Conceptual Example, providing a brief summary of the key idea used in the solution to consolidate what was most important and what can be broadly applied to other prob-lems, to help students identify strategies that can be used in future problems.
• KEY EXAMPLE ARIATION PROBLEMS in the new Guided Practice section at the end of each chapter are based on selected worked examples. They build in difficulty by changing scenarios, swapping the knowns and unknowns, and adding complexity and>or steps of reasoning to provide the most helpful range of related problems that use the same basic approach to solve. These scaffolded problem sets help students see patterns and make connections between problems that can be solved using the same un-derlying principles and strategies so that they are more able to tackle different problem types when exam time comes.
• Expanded Caution paragraphs focus on typical student misconceptions and problem areas. Over a dozen more have been added to this edition based on common errors made in MasteringTM Physics.
• Updated and expanded Application sidebars give students engaging and relevant real-world context.
• Based on data from Mastering Physics and feedback from instructors, changes to the homework problems include the following:

Over 500 new problems, with scores of other problems revised to improve clarity. Expanded three-dot-difficulty and Challenge Problems significantly stretch students by requiring sophisticated reasoning that often involves multiple steps or concepts and>or mathematical skills. Challenge Problems are the most difficult problems in each chapter and often involve calculus, multiple steps that lead stu-dents through a complex analysis, and>or the exploration of a topic or application not explicitly covered in the chapter.

New estimation problems help students learn to analyze problem scenarios, assess data, and work with orders of magnitude. This problem type engages students to more thoroughly explore the situation by requiring them to not only estimate some of the data in the problem but also decide what data need to be estimated based on real-world experience, reasoning, assumptions, and>or modeling.

• Expanded cumulative problems promote more advanced problem-solving tech-niques by requiring knowledge and skills covered in previous chapters to be inte-grated with understanding and skills from the current chapter.
• Expanded alternative problem sets in Mastering Physics provide textbook- specific problems from previous editions to assign for additional student practice.

KEY FEATURES OF UNIVERSITY PHYSICS WITH MODERN PHYSICS

• A QR code at the beginning of the new Guided Practice section in each chapter allows students to use a mobile phone to access the Study Area of Mastering Physics, where they can watch interactive videos of a physics professor giving a relevant physics dem-onstration (Video Tutor Demonstrations) or showing a narrated and animated worked Example (Video Tutor Solutions).
• End-of-chapter Bridging Problems provide a transition between the single- concept Examples and the more challenging end-of-chapter problems. Each Bridging Problem poses a difficult, multiconcept problem that typically incorporates physics from earlier chapters. The Solution Guide that follows each problem provides ques-tions and hints that help students approach and solve challenging problems with confidence.
• Deep and extensive problem sets cover a wide range of difficulty (with blue dots to in-dicate relative difficulty level) and exercise both physical understanding and problem-solving expertise. Many problems are based on complex real-life situations.
• This textbook offers more Examples and Conceptual Examples than most other lead-ing calculus-based textbooks, allowing students to explore problem-solving challenges that are not addressed in other textbooks.
• A research-based problem-solving approach (Identify, Set Up, Execute, Evaluate) is used in every Example as well as in the Problem-Solving Strategies, in the Bridging Problems, and throughout the Instructor’s Solutions Manual. This consistent approach teaches students to tackle problems thoughtfully rather than cutting straight to the math.
• Problem-Solving Strategies coach students in how to approach specific types of problems.
• The figures use a simplified graphical style to focus on the physics of a situation, and they incorporate blue explanatory annotations. Both techniques have been demon-strated to have a strong positive effect on learning.
• Many figures that illustrate Example solutions take the form of black-and-white pencil sketches, which directly represent what a student should draw in solving such problems themselves.
• The popular Caution paragraphs focus on typical misconceptions and student problem areas.
• End-of-section Test Your Understanding questions let students check their grasp of the material and use a multiple-choice or ranking-task format to probe for common misconceptions. Answers are now provided immediately after the question in order to encourage students to try them.
• Visual Summaries at the end of each chapter present the key ideas in words, equations, and thumbnail pictures, helping students review more effectively.

Mastering™ is the teaching and learning platform that empowers you to reach every student. By combining trusted author content with digital tools developed to engage students and emulate the office-hour experience, Mastering personalizes learning and improves results for each student.
Reach every student with Mastering

• Teach your course your way: Your course is unique. Whether you’d like to foster stu-dent engagement during class or give students anytime, anywhere access, Mastering gives you the flexibility to easily create your course to fit your needs.
• With Learning Catalytics, you’ll hear from every student when it matters most. You pose a variety of questions that help students recall ideas, apply concepts, and develop critical-thinking skills. Your students respond using their own smartphones, tablets, or laptops. You can monitor responses with real-time analytics and find out what your students do—and don’t—understand. Then you can adjust your teach-ing accordingly and even facilitate peer-to-peer learning, helping students stay motivated and engaged.

Expanded alternative problem sets, with hundreds of vetted problems from pre-vious editions of the book, provide additional problem-solving practice and offer instructors more options when creating assignments.

• Empower each learner: Each student learns at a different pace. Personalized learning, including adaptive tools and wrong-answer feedback, pinpoints the precise areas where each student needs practice and gives all students the support they need—when and where they need it—to be successful.
• Interactive Pre-lecture Videos provide an introduction to key topics with embed-ded assessment to help students prepare before lecture and to help professors iden-tify student misconceptions.
• NEW! Quantitative Pre-lecture Videos now complement the conceptual Inter-active Pre-lecture Videos designed to expose students to concepts before class and help them learn how problems for a specific concept are worked.
• NEW! Direct Measurement Videos are short videos that show real situations of physi-cal phenomena. Grids, rulers, and frame counters appear as overlays, helping students to make precise measurements of quantities such as position and time. Students then apply these quantities along with physics concepts to solve problems and answer questions about the motion of the objects in the video. The problems are assignable in Mastering Physics and can be used to replace or supplement traditional word problems; they can also serve as open-ended questions to help develop problem-solving skills.
• NEW! Dynamic Study Modules help students study effectively—and at their own pace. How? By keeping them motivated and engaged. The assignable modules rely on the latest research in cognitive science, using methods—such as adaptivity, gami-fication, and intermittent rewards—to stimulate learning and improve retention. Each module poses a series of questions about a course topic. These question sets adapt to each student’s performance and offer personalized, targeted feedback to help students master key concepts.
• NEW! The Physics Primer relies on videos, hints, and feedback to refresh students’ math skills in the context of physics and prepares them for success in the course. These tutorials can be assigned before the course begins or throughout the course as just-in-time remediation. They ensure that students practice and maintain their math skills, while tying together mathematical operations and physics analysis.
• Deliver trusted content: We partner with highly respected authors to develop interactive content and course-specific resources that keep students on track and engaged.
• Video Tutor Demonstrations and Video Tutor Solutions tie directly to relevant content in the textbook and can be accessed through Mastering Physics, via the eText, or from QR codes in the textbook.
• Video Tutor Solutions (VTSs) for most worked examples in the book walk stu-dents through the problem-solving process, providing a virtual teaching assistant on a round-the-clock basis.
• Video Tutor Demonstrations (VTDs) feature “pause-and-predict” demonstra-tions of key physics concepts and incorporate assessment to engage students in understanding key concepts. New VTDs build on the existing collection, adding new topics for a more robust set of demonstrations.
• NEW! Enhanced end-of-chapter questions provide expanded remediation built into each question when and where students need it. Remediation includes scaf-folded support, links to hints, links to appropriate sections of the eText, links from the eText to Mastering Physics, Video Tutor Solutions, math remediation, and wrong-answer feedback for homework assignments.
• NEW! Key Example Variation Problems, assignable in Mastering Physics, build in difficulty by changing scenarios, swapping the knowns and unknowns, and add-ing complexity and>or steps of reasoning to provide the most helpful range of related problems that use the same basic approach to find their solutions.
• NEW! Bridging Problems are now assignable in Mastering Physics, thus pro-viding students with additional practice in moving from single-concept worked examples to multi-concept homework problems.

Improve student results: Usage statistics show that when you teach with Mastering, student performance improves. That’s why instructors have chosen Mastering for over 15 years, touching the lives of more than 20 million students.