#1: what dorkus said.
#2: The style i play, (tight aggressive), players give me enough respect for a hand that if i have AK, it's sure to be a heads up pot, or maybe
Either way, if they are both weak players, and are calling my raise, then i've put them on either a small pocket pair (not strong enough to reraise with, but they'll see a flop), or two cards, hoping to hit them (usually big cards, but donks do call with T5s type hands - ).
So generally, i will put out a c-bet like dorkus said (or continuation bet) to either represent AA, KK etc or a piece of the flop. Most of the time, for me, this will take the pot down.
If not, and my opponent calls me, I then have to re-evaluate. Why are they calling (slowplay? did they hit? maybe drawing? maybe calling down with A-high?), i then act accordingly to my read. Your read has to be strong on them, or you could be losing alot of money
Also, to repeat what chris said, I will never C-bet if i get more then 3 callers if i don't hit, because odds
are that one of them has hit a piece of the flop and will call me down. Neither will I c-bet a calling station if i haven't hit the flop because its just plain pointless.
ok i'm rambling a bit here, but basically you want to raise PF to sweeten the pot and to isolate, then c-bet the flop (conditionally of course)