This deck has many physics equations to help study for the physics GRE. The equations can mostly be found in this book:
http://amzn.to/2cHzmsx (direct link to Amazon: 'Conquering the Physics GRE', an amazing book for physics GRE prep).
The variables in the equations tend to not have an explanation so if you're not already familiar with any of them, be sure to look them up.
Note on using this deck: If you can avoid rote memorization of any of the equations in the deck and simply remember how to derive them quickly, that will save you time and help prevent memory problems when taking the test. Good luck!!