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chemistry syllabus is better than physics. physics goes into history and chem just applies chem knowledge to everyday tasks undertaken by professional chemists.

I had site B for the NaOH. the main reason being it's near power station (because it uses current of tens of thousands amperes and there's huge energy lost in transmission). I know there are some disadvantages of site B but I just kept saying that the energy-saving simply compensates for...

It was a good paper. Yes there was a lot of memorisation but it doesn't make it a crap paper. They all relate to chemistry. For example, You're meant to know all your experiments so the emulsion one is a valid question. You should know the production of sodium carbonate and sodium...

If you're still interested to know how to do this question: Before I tried to use the product rule, P(its a boy and from senior) = P(its a boy) * P(its from senior [given its a boy]) but it's best NOT to think about it that way because product rule is used for independent events. In this...

u sure? there are more than 4 people in this forum which are likely to get full marks...

its likely to be the Hero and Saga type ;) same exam committee EDIT: but maybe they make a different one after the complain last year

Last part of Q8 is about playing around with algebra download a paper from boardofstudies.nsw.edu.au and you'll see. its not really harder 3U. more like harder application of polynomial, complex number theorems and integration technique. One of the parts in Q7 may be easy so dont forget to...

I dont think something this important would be in the mail :p And if it is probably the postman stole it.

I'll just quote the circumference*height*delta(x) formula and come back to it when I have time to spare (which wouldnt happen :p) Also not everyone doing 4U maths lack social skills But those who do really really well usually have limited social skills.... But of course there might be a...

that's if you can actually show that the statement is true for n=k+e :p this stuff is likely to get super messy (IFF it can be done)

To all: At this stage doing several past HSC papers is probably the best approach. Use this summary only as a reference when you're doing them, and try to memorise formulas and techniques along the way. You can ignore Q10(b), probably its better to do more normal questions considering you've...

Ok I needed to refer to the examiners' report but if I was in a real exam I might be able to do it because force myself to do it. Anyway, the style of Q10(b) of 2002 and 2003 (algebra mess) are characteristics of the new exam committee and is likely to appear in 2004 paper as well. So I'll...

Oh thank you ! :) @withoutaface: Can you explain the "(win by black)/(win by red+win by black)=11/19" part? @Estel: How did you find the relative probabilities?

reminiscent of 4U Question 8 algebra bash is evident in 2002 and 2003 papers LOL This trend shall not continue :P

If an expression is written as sqrt(x^2), it must be >=0 and is identical to |x| Simlarly I would expect x^(2/2) to be >=0 and x^(a/b), where both a and b are even numbers, to be >=0

Induction can be used to prove negative integers. It should be able to be used to prove non-integers as well, but not all real number. You can only prove numbers that go with a fixed increment. For example, prove for n=k and k=k+0.5. If you can also establish the truth for n=pi, its true...

Can somebody explain the riddle in http://www.boredofstudies.org/community/showthread.php?t=43995 ?? Also I came across a similar-looking question from Cambridge, Extension section. In a game, a player draws a card from a pack of 52. If he draws a two he wins. If he draws a three, four or...

there are 1 or 2 errors but most of them are correct.

That means I dont need to scan mine :D BTW Lazarus, is the MANSW solution an official one?

if u ask... (although I have no idea why you need this..) 1. As part of her work, a manager selects an appropriate strategy to resolve conflict between workers and management. Which management role is being exercised when selecting this strategy? (a) decision-making (b) informational (c)...