NEW TO THIS EDITION

Although the fundamental philosophy of the book has not changed, detailed feedback from over 130 reviewers (many of whom used the second edition in the classroom) has enabled us to fine-tune our approach to make the text even more user-friendly, conceptually based, and relevant for students. The third edition also has some added features to further facilitate student learning.

A greater emphasis has been placed on fundamental physics concepts:

• Connections identify areas in each chapter where important concepts are revisited. A marginal Connections heading and summary adjacent to the coverage in the main text help students easily recognize that a previously introduced concept is being applied to the current discussion. Knowledge is being revisited and further developed—not newly introduced.
• Checkpoint questions have been added to applicable sections of the text to allow students to pause and test their understanding of the concept explored within the current section. The answers to the Checkpoints are found at the end of the chapter so that students can confirm their knowledge without jumping too quickly to the provided answer.
• The exercises in the Review & Synthesis sections have been revised to concentrate even more heavily on helping students to realize through practice problems how the concepts in the previously covered group of chapters are interrelated. The number of problems in the Review & Synthesis sections has also been increased in the new edition. (The MCAT review problems have been retained to also help premed students focus on the concepts covered in the upcoming exam.)
• Nonessential coverage and derivations have been moved to the text’s website. This will help students not only to focus further on the fundamental, core concepts in their reading of the text but also allow them to go online for additional information or explanation on topics of interest. Identifiers in the text direct students to additional information online.

In addition, the following general revisions occur in chapters of the text:

• The topical question from the chapter-opening vignette now appears in the margin (along with a reduced version of the chapter-opening image) to help students identify where in the main text the answer to the chapter-opening question is addressed.
• Applications have been clearly identified as such in the text with a complete listing in the front matter.
• Many helpful subheadings have been added to the text to help students quickly identify new subtopics.
• Portions of the text now caption images to establish a visual connection between the text’s concepts and terms and the art and photos.
• Great care was taken by both the authors and the contributors to the third edition to revise the end-of-chapter and Review & Synthesis problems. Approximately 150 problems are new, and an emphasis has been placed on progressing difficulty level to help students gain confidence and reinforce new skills before tackling more challenging problems.

The following lists major chapter-specific revisions to the text:

Chapter 2: A discussion of unit vectors has been added. Sections 2.1 through 2.4 have been reorganized for a more intuitive presentation.
Chapter 4: A more concise section on air resistance is provided with a more detailed discussion available online.
Chapter 7: Section 7.6 Motion of the Center of Mass has been simplified.
Chapter 8: Example 8.1 has been replaced with a new problem on the rotational inertia of a barbell.
Chapter 10: Section 10.8 The Pendulum has been made much more concise with a more detailed discussion of the physical pendulum available online.
Chapter 11: A new “law box” highlights the physical properties that determine wave speed. The discussion on interference has been expanded for added clarity.
Chapter 12: In Section 12.9, the discussion of shock waves has been shortened. A more detailed discussion is available online.
Chapter 14: A detailed discussion of convection and Example 14.12 Roller Blading in Still Air have been moved online. Section 14.7 is now a brief, conceptual description of convection. Section 14.8 Thermal Radiation has been revised with a clearer description of solar radiation and global warming.
Chapter 15: Section 15.5 Heat Engines has been revised to include a more accurate description of the development of the steam engine. The process of the internal combustion engine is now illustrated in Figure 15.12. Details of the Carnot cycle and a discussion of the statistical interpretation of entropy are available online.
Chapter 16: A new Example 16.7 Electric Field due to Three Point Charges has been added.
Chapter 22: Section 22.1 has been simplified and is now titled Maxwell’s Equations and Electromagnetic Waves. A more detailed discussion appears online. The material on antennas has been made more concise.
Chapter 27: The derivation of the radii of the Bohr orbits has been moved online. The section on atomic energy levels has been revised and made more concise.
Chapter 28: Section 28.8 Electron Energy Levels in a solid has been made much more concise with a more detailed discussion available online.
Chapter 30: The discussions of quarks and leptons have been expanded and clarified. The discussion of the standard model is significantly more concise. Twenty-first-century particle physics has been updated, and the most recent information will be provided online.

Please see your McGraw-Hill sales representative for a more detailed list of revisions.