While we all may be concerned about our ATAR, we need to remember that it is just a number that is used to get us into the course we want at university. If we don't achieve it, there are always other pathways and the truth is: no-one gives a fuck about your ATAR after 2015.
re: HSC Physics Marathon Archive
Principle of Conservation of Momentum. When the spaceship gains momentum, the planet will lose momentum hence there is no change of speed from the perspective of the observer on the planet.
re: HSC Physics Marathon Archive
"Both the positive holes flowing in one direction and the electrons flowing in the other direction will experience a force to the same side of the rod, i.e. the bottom side." - Success One.
Alright guys, I have looked at the solutions and I think I am getting a 67 raw. This exam is certainly the most difficult since 1997. I will place a bet that the state rank mark will be around 75.
Yes. You could have done 13(c) on the first booklet, 13(a) on the second booklet and 13(c) on the last. As long as you have ticked off the box at the end and wrote the question number on the front, it does not matter what order.