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Just wondering how other people's answers compared to mine: (a)(i) 2310 = 000101112 Two's compliment = 11101001 (ii) I wasn't quite sure, I said something like the negative numbers were made positive before the division (shifts and subtracts) then if the numerator was negative XOR the...

Yes but it gets rounded down, so the values are 1,2,3,4,5, or 6. That is definantly comparable to dice.

As Ianc stated, C is correct for 12. They would take into consideration whether or not the kids got bored, confused etc.

I had about 20 minutes left.

I used 8 booklets, one of them however contained only this: Which I found rather amusing yet wasteful. A bit annoyed really, I should have done some study for it now that I realise how dam easy it all was. Was expecting it not to count for me.

I only disagree on 2 of them: 9 is B Int(RND*6 + 1), this has a max value of 6.9999, and it doesn't round up so it can't have a value of 7. 17 is A Be careful, it says it is indexed from 0. Other than those I think you got them all right, however there is one I am not sure about, for...

What doesn't work? The link or the file itself?

I have only done Q 1,2 and 3 at the moment, I will edit this post if I add more. http://sober.s5.com/sober_solutions_mx2_2006_hsc.pdf Copy and paste the url to your browser (a direct link doesn't work).

Are you sure that quadratic can be factorised? I even plugged this into mathematica and it gave me nothing: Factor[(x^2 + ax + b)^2 + a(x^2 + ax + b) + b - x]

when you are given f(x) and told to draw f'(x) things to look for: - turning points will become x-intercepts, - inflexions will become turning points - sloping upwards becomes somewhere above the x-axis - sloping downwards becomes somewhere below the x-axis - vertical sections become...

Re: Is anyone else as fucked as i am? fucked like a cheap whore in singapore? Ahahah, this title cracks me up. right now I couldn't be more prepared, it feels great, shoulda thought about this earlier folks.

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Not from the centre of the planet but from 10,000 as well. The equation we use for Ep treats the planet as a point gravity source (much like a black hole), so if you try to work out the enery required to move from the exact centre you will get a value of infinite (r is on the denonminator).

There was something along the lines of "suppose instead". Perhaps not exactly that, but something to the same effect. I was quite particular about it.

Stand on the scales at your house, now push down on a table next to you with your hand, the reading can go down without you lifting off the scales. Sheesh, you do physics?

The distance between the rods will not change until the current is high enough to make the reading on the scales equal 0kg, at which point it will rise instantly to stick to the other rod. So no, the distance does not slowly decrease.

Alot of people are saying 0.75 MJ. This is close to the correct answer. If you read it carefully it was asking for you to move it from 10,000 to 80,000 (the previous statement of moveing it from 10,000 to 20,000 was just a hypothetical). Hence you have to add 1 MJ. Correct answer is 1.75 MJ

You do not need to hope, it was definantly 0.3. An accellerated particle will see objects around them thinner than they really are, hence 0.24 is less than the real length. Most people I spoke to in my class got it wrong.

The excitement has worn off. But I'm still satisfied knowing I will never have to critically analyse a poem ever again.

I went well.