If you need to know it, it's in this book. The 2013-2014 edition of Cracking the SAT Physics Subject Test includes:
· 2 full-length practice tests with detailed explanations
· Accessible, engaging subject review, including coverage of Newton's Laws, work, energy and power, linear momentum, rotational motion, electric potential and capacitance, electromagnetic function, motion, oscillations, thermal physics, optics, waves, circuits, and more
· Tons of sample problems and drills
