Medical students typically spend about 29 hrs per week for required courses during pre-clincal years. As you progress through your degree, you'll also need to set aside periods as residents in Hospitals, as well as 2-5 hours in elective courses.
Academic periods are also longer than other faculties, except for ADFA etc.
im on 40-55 hrs now.. but im not at UNSW...my UNSW friends are reporting similar hours .. on top of studying its a drag... clinics/surgeries/ward work and tuts take up most of my days.. but u get free lunches some days..