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well ive got 3 related texts prepared for my Paper 1 section 3, and i just did a time trial and it took me 37 minutes and 23 seconds to write it out full speed, which was pretty good effort, that leaves me with another 2 minutes to spare :D. If the question asks me to use the longer of my 2...

well sucked in to those selectivers, ill be laughing hard at them when i finish and they only just get started :D

how is dy/dx = -2/x^2 not the derivative of y = 1/(2x) 1/(2x) is the same as 2x^-1 isnt it, u times the front by -1 and u bring the power down by 1 giving u x^-2 so that gives u -2x^-2 therefore -2/(x^2) ????

isnt the derivative of y = 1/(2x) dy/dx = -2/x^2 ?

hi guys, im just wondering if Food poisoning is an infectious disease? It is transmitted through food and not through humans, so i dont understand whether its a nutritional disease, or an infectious disease? If it is an infectious, how many marks would I get if i answered a question where...

Arteries are thick-walled vessels which carry oxygenated blood away from the heart under HIGH pressure, and effectively pumps blood to all parts of the body. Veins are thin-walled vessels carrying de-oxygenated blood TO the heart under low pressure, and have valves present to prevent back...

oh ok, thanx guys :)

hi guys im just wondering if every student has a particular centre number or is that a number that the school gives u on the day of the HSC, or do i require one myself? just making sure ta

i dont find the countdown annoying at all, in fact it gives the whole wait a "dramatic" urge to it which is exhilirating :). In fact i remember when i first started counting down and telling every1 in my year, since 238 days to go :P ....well now its just 5 days, 9 hours and 48...

ohhh i get it now, so an Allele is an alternative factor on a particular gene? thanx losa that made a lot more sense, thanx guys :)

i know this might sound like a sstupid question but do we have to wear our school uniform to the exam, or does it vary from school to school?? if so what will YOU be wearing?

Can someone tell me wat the hell the difference between alleles and genes are, every single source has a different story. One text book says this, another text book contradicts it. ..........?????

i really hope we get a question as easy as last years one which was: "The arrival, not the journey, matters" And by the way LostAuzzie your question was exactly the same as mine :)

no need to panic lozzi, i assure you that most tudents will look at an 8 mark question like that and say "no way im doing this" or at least struggle with it, i know that i would because it is a fairly hard question. But if you put ur mind to it and plan your answer you will pick up ur pace and...

yes thankk u very much :)

"After you work out ΔH, you convert it to Joules per gram or per mole. " And how do u do that? for example you have water which is say 50ml, the temp change is 10C and u put it into the equation: H = 50 x 4.18 x 10 H = 2090 Joules per gram? now wat do u do?

i still dont get this crap, whats the whole aim of this experiment?? i have 4 text books on chemistry, i looked at hsc online, and i looked here, none have the bloody steps of what to do after u calculate the stupid H=mCT or watever. any1 out there with an answer ????????

ah yeah, i get it now, u have to square everything in the brackets so u get 0.25c^2 and the c^2 cancel out and u get 0.25. lol silly question but o well i get it now :)

tV = tO / √ (1- [v2 / c2 tV = tO / √ (1- [ {0.5c}2 / c2 ]) tV = tO / √ (1-0.25) ^ One thing i dont understand about that is why the 0.5 gets squared when the c^2 is cancelled out with the c^2 on the bottom so 0.5c^2/c^2 should be 0.5 therefore (1-(0.5) ) doesnt it? can someone...

im doing communication and im lovin it, its very interesting and YES were dissecting eyes tomorrow :) the topic is basically involved in how humans, animals and insects receive information and responde to it. How we receive information (eyes, ears, nose - smell etc) and how we respond to it...