Hello, I am currently a second semester sophomore studying Mechanical Engineering thinking about studying Physics at the graduate level after my undergraduate degree is done. My main inquiry is regarding the transition from Mechanical Engineering to Physics. How hard is it exactly (if at all)? Also, if I was thinking about doing a PhD program in either what would my grades have to look like in order to attend a reputable school with an outstanding Physics or Mechanical Engineering department. My current GPA is a 3.30, any advice on raising it (as well as addressing the aforementioned questions)? Thank you.