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The headers/footers are really obnoxious :/

I lose a mark for not specifically stating that M is on PQ and M lies on hyperbola from (i) right? Because otherwise I just showed PQ parallel to tangent at M. :( Or will markers understand? What do you think

But it's given that M is the midpoint of PQ and also M lies on the hyperbola from (i)

for 13cii) I said that if PQ is tangential to hyperbola at M then gradient of PQ = gradient of tangent at M. And then I showed that. Is this a valid "proof"? Will I lose marks for bad style?

Dw... not as bad as not seeing 5 fucking marks worth of questions (in Q12 + 13). I don't understand myself anymore T_T I would be sitting comfortably in my HSC mark aim but not anymore lol

http://community.boredofstudies.org/1116/mathematics-extension-2/329624/general-thoughts-mathematics-extension-2-a-post6773375.html

Can someone kindly upload the paper? I didn't take it home and I want to go through some Q's :( Doesn't have to be scanned (use phone or something)

Lollllllll............ I completely didnt see a piss easy 3marks in Q12.zzzz edit: missed 2 more ... wtf

ngawwwww. Good luck everyone :)

All my weakest topics right there :'( Omg if only I did my hsc last year... i found the paper really easy

It's just the way the EMR is generated - by oscillating charges. Frequency of oscillation would then dictate the frequency of the EMR Edit: A more technical explanation would be something like EMR consists of oscillating electric and magnetic fields. In the Hertz experiment, the oscillating...

how do you just sit there and press calculator buttons for 2 hours? (hahahahaha shots fired)

Wtf u guys make me panic >.> what's so special about it? is it meant to be hard? terry lee has a 6 line proof

Am I meant to know some reflection property t-t

Nope. The first equation you listed is the overall equation of the 2-steps

New Q (industrial students): What TWO equations for the reactions that occur in the Solvay Tower (past paper Q and textbooks have contradicting answers so idk anymore :/)

yup no one answered my q yet

what about bromine?

what about vapour?

why do we use fume cupboard in bromine experiment? not sure if because bromine toxic + release vapours or if cyclohexene/ane toxic + release vapours or both :/