My teacher gave us a worksheet to prepare for the test tomorrow, and we never discussed anything about problems 10 to 14. I'm not asking for answers . . . just clarifications. 1.) What is a shock cone, anyway? 2.) What does Mach II, Mach III, etc. mean? 3.) Are there certain equations that I have to use when solving problems about shock cones? I would really like to not post the questions on here, because I want to figure them out myself. Just answer my above questions for me as best as you can, and I'm hoping that will help me figure these out. Thanks!