Recent content by Deliriously

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?