You need to study enough physics to undertake research into some aspect of physics.
Any science class will be important.
To become a pilot you need to have maths and physics or you can take what you most enjoy in school but maths and physics are prefered better.
Physics
12 yrs
alot
An MD for starters.
Because it's what you want to become. If your questioning your decision maybe you need to become something else.
maths,physics and bio
No, just cosmetology-a vocational school.
You need to have all sciences (Biology, physics and chemistry) and it is obvious that you need to have A's and A*'s to become a peditrician
You will need to study Physics and Mathematics (preferabley with Mechanics) at A-level. Then do a degree in Physics at university though that is to general, you will need to specialise in a certain subject.