I just finished my freshman year at a very highly esteemed LAC. I started off wanting to do physics but I did not continue with it like I probably should have. I am on track to be a math major. I was wondering if I got a math major and got a phd in applied mathematics, what kinds of fields could I go into? Could I go into certain aspects of physics? Or maybe intelligence (another thing ive always been interested in). I'm just not exactly sure what applied mathematics is. Also, would it be worth it to work to minor in physics or is that unnecessary?