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Binomial identities i presume ?

It's actually worse on the road. Took me and hour to get home today, and it's usually a 30 min drive.

lol dont open the discussion thread then ?

inb4itwaseasybutimade38sillies

Find an expression for the volume lost in each container Differentiate each one. Put them over each other and it simplifies easily.

nope....... not yet

I've been deceived.... thanks for your help!

faauuuurrrr realise thinks 20 people will get 51

I say for every mark someone gets above 50 tomorrow carrot gets bamboo-ed once.

I know they are not eddy currents generated, but i thought for the HSC we are allowed to call them that? A question on this is in 2003 HSC Q23a, while marking notes say "current" alone, there is no mention of eddy currents. Is it accepted in the HSC?

I'm not trolling at all. Think about how eddy currents "disappear". They leave as heat due to meeting resistance. But when a superconductor is below critical temperature, resistance is zero, so how else can the eddy current disappear? Why do you think superconductors are so good, because we...

When the super conductor is below critical temperature, resistance is zero. So when the initial current is induced due to Lenz's Law, it just keeps going as there is no resistance. And the magnetic poles created stay there as a result. Hence the hovering.

nah they're multiple choice. he softened up the mc a bit

Carrot put up a 3U question that didnt make the paper?

After it he'll post solutions, averages, the paper, and watch everyone curse him all the way to hell and back.

Sure sure

There isn't much to learn from a collage to be honest. ;)

ITT: mathtabating