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Hey guys, I was looking through all the past HSC and a lot of trial papers for questions and these were the ones I'm not that confident I'd be able to answer well. How would you guys approach them? 2009 HSC: A deeper understanding of disruption and identity emerges from considering the...

Hey guys, Can you help me with these questions (from 2010 HSC)? Can you explain the answers: 7 Equal volumes of four 0.1 mol L acids were titrated with the same sodium hydroxide solution. Which one requires the greatest volume of base to change the colour of the indicator? (A) Citric...

Hey guys, I was just looking at Euler's formula and came up with this: <a href="http://www.codecogs.com/eqnedit.php?latex=e^{i\pi}=-1\\ e^{2i\pi}=1\textup{ (On squaring)}\\ e^{2i\pi}=e^0\\ 2i\pi=0\textup{ (On equating powers)}\\ \therefore i\pi=0" target="_blank"><img...

Hey guys, Is anyone else from BOS going to the Canberra Maths Day at ANU towards the end of the month : http://cpms.anu.edu.au/special/maths-day. For others that have gone in the past, what did you think of it? Our school did a similar thing in Year 10 for maths and I thought it was really...

First off, you want to graph y=(x-4)/(x+2). There are a few ways to do this. Personally, I would realise that there is no value at x=-2 because the denominator becomes zero. At this point approaching from the negative side, y approaches infinity and approaching from the positive side, y...

Hey guys, Do any of you know any methods to improve handwriting speed without making the quality worse? Is it just practice or have any of the more 'exotic' methods (battery on pen etc) actually worked? If it helps, I can probably write about 1600 words in an hour but ideally I want to do...

Hey guys, On the BOS website, it says that there were two correct answers for Q8 of the bio paper (LINK HERE) Does anyone remember what the question was and the options? Cheers

Hey guys, Can someone explain how the prac on page 88 of Jacaranda works (). Basically, there is a graphite electrode and an electrode of a different metal (e.g. zinc) in the same NaCl electrolyte. It says there is a potential difference because of the different electrodes but I can't see where...

Hey guys, This question is from Surfing Physics and I've got no clue how to solve it... A projectile fired up into the air from the top of a 75m high cliff hits the ground 500m out from the base. Find the initial velocity, time of flight and maximum height. If anyone can give a worked...

Hey guys, We got this question in our exam and I think the teacher has the wrong answer. What do you think: Q. What is the effect of higher petrol prices and interest rates on the government's budget position? A. Deficit will increase B. Government revenue will increase C. Surplus will...

Hi guys, Just two questions: 1. When a car is going around a curve, in order to avoid flying off does the friction force have to equal the centripetal force or can it be greater? 2. What forces cause a change in velocity in a car going around an icy curve? Thanks heaps

Hey guys, Would anyone be willing to take a quick look at my assignment on the impacts of the budget (2 pages) and tell me what you think? Thanks a lot :)