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Chapter 7 Energy and Energy Transfer ▲ On a wind farm, the moving air does work on the blades of the windmills, causing the blades and the rotor of an electrical generator to rotate. Energy is transferred out of the sys- C H A P T E R O U T L I N E 7.1 Systems and Environments 7.2 Work Done by a Constant Force 7.3 The Scalar Product of Two Vectors 7.4 Work Done by a Varying Force 7.5 Kinetic Energy and the Work–Kinetic Energy 7.6 The Nonisolated System— Conservation of Energy 7.7 Situations Involving Kinetic Friction 7.8 Power 7.9 Energy and the Automobile 181 |