It really depends on your school. In the USA, there are a lot of required courses that don't have anything to do with your major. At my CC they require 6 Arts/Humanities, 3 Communication, 6 English, 2 PE, 6 Social Science, 3 Social Sciance/Arts/Humanities (26 credits) in addition to the 38 credits specific to an AS in Physics. This comes to 64 credits, the minimum credits possible to get an AS at their institution.
The nature of many transfer programs is such that after attaining your AA/AS, the transfer institution waives their "core curriculum" and you can focus on your major. So it's key that you find out which credits transfer. For example if I transfer to an in-state university I won't have to take any more Liberal Arts 101 classes... but if I go out-of-state to a university that doesn't have a matriculation agreement my transcript would be audited credit by credit by some desk jockey who would decide what classes counted.. and which classes I'd have to retake.
So like I said, it depends. If your school has an agreement with other universities then you likely won't need to take more useless classes. If they don't, you will. It's worth mentioning that most universities require more than 3 humanities courses, so I'd suggest following jtbell's advice ASAP. If the university you intend to transfer to requires more than your CC does you'd be better off taking them now while they're cheap.