The new edition of the best-selling, calculus-based introductory Physics text. Robust online homework system includes ALL end of chapter problems in the book plus more online Chapters were restructured into modules based on a primary concept. Based on his active teaching, Jearl Walker has identified material that students have been particularly challenged by (eg Gauss law and electric potential) and has rewritten this information so that the presentations are now smoother and more direct to the key points