PHYSICS C10 Study Guide - Chocolate Chip Cookie, Calorie, Kilogram
Document Summary
Explanatory range of physics: physics explains everything from protons (10-15 m) to galaxy clusters (1023 m, explanatory range of physics = Energy: mechanical energy (motion, types of energy (non-exhaustive list): 2 mv2) [ke is in j, m = mass in kg, v = velocity in m/s] Work = (force magnitude) x (distance the force travels: heat energy (really a form of mechanical energy, caused by movement of particles, electromagnetic energy, chemical energy, nuclear energy, mass energy (having mass endows something with energy. [type text: energy cannot be created/destroyed, only transformed (conservation of energy). Ex: a swinging object will eventually come to a stop not because its kinetic energy is lost, but because it is transformed into heat through friction. In a social sense, conserving energy means keeping as much energy as possible in forms that are useful to us (i. e. electricity): the only way we know energy exists is because we can observe its transformations.
