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Re: HSC 2015 3U Marathon do these players get to see the cards lol. if so, then 1/25 my ability in perms is terrible, anyone got recommendations on where to practice some problems (easy-challenging) o-o

re: HSC Chemistry Marathon Archive 4u: complex,graphs,poly,conics (1/3 through) 3u: most except motion phy: barely half-way through motors chem: just finished titration eng adv: still on hamlet lol let me know the questions you guys had after you finish your test!

re: HSC Chemistry Marathon Archive dayum, our school completely behind compared to your :O

re: HSC Chemistry Marathon Archive Woah half yearlies already? It's only week 6 :O Which school is this?

re: HSC Chemistry Marathon Archive it's just rote tbh, like the scientists for 'space' and rocketry

bro u seem like a total maths nerd

re: HSC Chemistry Marathon Archive go ahead

Re: HSC 2015 4U Marathon yeah so many people get the locus part wrong, esp. the restricted domain in which the locus exists. Def draw a diag...

Quanta to Quarks and parts of Ideas would prob also be important, you reckon?

the truth

Yeah, eddy currents produce their own mag field that opposes or 'repel' (though oppose is a better word) the change in mag. flux

Pretty sure this is not true. emf induces a current, not the other way around. (Or is it the current induced that gives rise to a 'backwards' emf? )

Pretty sure you just stated Lenz's law, LOL

yeah trials are the same as half-yrly, just more topics

re: HSC Chemistry Marathon Archive From ideas to imp (i think), i believe transparency has to do with the crystalline structure of the polyethylene. The lower density and non-uniform branching structure equates to less crystalline regions that enable light to pass through -> thus more transparent?

re: HSC Physics Marathon Archive ahh yeah, i just wanted to know whether it satisfied the first half of the question, haha :D

re: HSC Chemistry Marathon Archive Yeah that's just the production of elements such as curium etc. (particle accelerator generated elements) new prob means last 50 years, lol

re: HSC Physics Marathon Archive - lenz's law states that an emf induced as a consequence of faraday's law will induced a current in such a direction that the mag. field it produces opposes the motion of the mag. flux that produced it -> production of back eddy currents... - prev. conceived as...

most likely the second one, it's a pretty common Q.

yes, 'free' electrons in conduction bond (commonly known as 'sea' of electrons in metals) will conduct electricity. However, it's important to note that as electrons in this 'sea' increases, so does the resistivity of current flow. (I think)