If there's a will there's a way. Sure those subjects are difficult to get a good atar in but it isn't impossible, just try the best of your ability and apply for the uni's which don't need an atar (ie UWS) where it is only the cut off for an interview (but you need a decent umat). GL and have...
Maths get Cambridge and Terry Lee - Fundamental Mathematics and Jacaranda Physics for Physics and I don't know the other subjects.
(Maths Books = Ladies)
A cathode ray oscilloscope can be used to measure sound waves if a microphone and amplifier are used to input the signal. The microphone is a transducer (energy changer) which converts sound energy into electrical energy. The C.R.O has a vertical axis which measures voltage (an indication of the...