No other book on the market today can match the 30-year success of Halliday, Resnick and Walkers Fundamentals of Physics! Fundamentals of Physics, 7th Edition and the Extended Version, 7th Edition offer a solid understanding of fundamental physics concepts, helping readers apply this conceptual understanding to quantitative problem solving, in a breezy, easy-to-understand style. A unique combination of authoritative content and stimulating applications. Numerous improvements in the text, based on feedback from the many users of the sixth edition (both instructors and students) Several thousand end-of-chapter problems have been rewritten to streamline both the presentations and answers Chapter Puzzlers open each chapter with an intriguing application or question that is explained or answered in the chapter Problem-solving tactics are provided to help beginning Physics students solve problems and avoid common error The first section in every chapter introduces the subject of the chapter by asking and answering, "What is Physics?" as the question pertains to the chapter Numerous supplements available to aid teachers and students The extended edition provides coverage of developments in Physics in the last 100 years, including: Einstein and Relativity, Bohr and others and Quantum Theory, and the more recent theoretical developments like String Theory.