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Oh I didn't know that. Yup then I can see that weekly is the way to go.

From experience, how do you get to UNSW and what tickets do you buy? For me, my route is Holsworthy->Central ($5.00 for return). Bus->UNSW ($3.60). That means I will be spending $8.60 for 1 daily trip and I go 5 days a week. Should I buy separate tickets + Bus 10 or myMulti (weekly...

Gonna start preping for uni. JOKES

b6 cut off for 2010 was 75 and i found that exam hardest by far. so probably ~77

re: HSC Physics Marathon Archive Yups. Reason why i posted was i got tricked. Orbital velocity doesn't depend on mass of the object orbiting T_T

re: HSC Physics Marathon Archive My trial as well. haha

re: HSC Physics Marathon Archive Hmm that question was actually an MCQ but X:Y 4:1 wasn't one of the options. They were: A) 1:1 B) 1: sqrt(2) C) sqrt(2):1 D) 2:1

Is the question photons per second? In that case, I got B Energy of 1 photon: E = hf E = hc/λ = 3.313x10^-19 1W is the energy consumption of 1J per second. hence 2W = 2J/s For number of photons transferred in 2J per second, Number of emitted photons = 2/3.313x10^-19 = 6x10^18 photons

re: HSC Physics Marathon Archive Applying v2 = u2 +2as for y component u2 = 2(1.6)(20) u = 8ms^-1 Q: Two satellites X and Y orbit the Earth. The mass of satellite X is twice that of satellite Y. The orbital radius of satellite Y is twice that of satellite X. What is the ratio of the orbital...

I used both Physics in focus and jacaranda. I found that if you want an in depth knowledge about the subject, use Jacaranda (has really good information). If you want precise notes, good practice questions + solutions (if you have the CD) and pretty setting out, use Physics in focus.

re: HSC Chemistry Marathon Archive 1) It prevents loss of volatile reactants+products as the vapors can condense back into liquid form. 2) It's an open system - allows higher temps to be used safely without pressure build up. Q: Identify two methods for determining the hardness of water...

Yep, that makes sense . Thanks ! and I guess you can't have a metal with high resistance either.

Well the answers says yes but I can't explain it.

But doesn't higher resistance result in more heat generated? EDIT: I'm confused even more now.

But wouldn't the saucepan with high resistance produce more heat from eddy currents hence heat up faster?

http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2012exams/pdf_doc/2012-hsc-exam-physics.pdf The answers says C. Does lower resistance = more heat?

around 122 HSC mark

Did your school not tell you to use pen for any exam since yr 7? However, I think (hope) you will be fine as they can send the actual written response to markers. I'm sure the BOS won't penalise you for not being able to read the scanned work.

If MC 10. is C then it will be the first time I'm glad BOS has introduced multiple choice.

E4 cut off for this year I believe will be the same as always ~ low 60's raw. E4 is the top band so it's 90+ HSC mark