WJEC Physics for A2: Study and Rev Guide

Contents How to use this book 4 Knowledge and Understanding Unit 3 Oscillations and nuclei Overview 6 3.1 Circular motion 8 3.2 Vibrations 13 3.3 Kinetic theory of gases 25 3.4 Thermal physics 32 3.5 Nuclear decay 41 3.6 Nuclear energy 52 Unit 4 Fields Overview 60 4.1 Capacitance 62 4.2 Electrostatic and gravitational fields of force 75 4.3 Orbits and the wider universe 92 4.4 Magnetic fields 103 4.5 Electromagnetic induction 119 Options Overview 130 A Alternating currents 132 B Medical physics 148 C The physics of sports 163 D Energy and the environment 175 Unit 5 Practical examination 189 M Mathematics and data 196 Exam preparation Exam practice and technique 208 Practice questions 212 Questions and answers 217 Answers Quickfire answers 231 Extra question answers 237 Practice question answers 247 Index 253