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The question isn't fucked..you get the nucleon mass of helium from the periodic table.

Just do it all in kilograms, and convert to amu right at the end so you don't have to convert too much.

I really enjoyed the 8 marker for some reason. The JWST question stumped me though.

A superconductor below its Tc tries to prevent its internal magnetic flux from changing. So a magnetic field from a permanent magnet is excluded because a current is induced in the superconductor. This creates a force that holds the magnet in position. The magnet does not slide off the...

Maybe the superconductor wasn't at its Tc. Was this at 'Kickstart Physics'?

http://www.youtube.com/watch?v=indyz6O-Xyw&feature=related What's that you say?

Yeah, I know. The reason given to me by the USyd professor was that the exclusion explanation is mostly out of the scope of the HSC course, and that currents are induced, but not due to Lenz's Law.

You can also take t=(2usin15)/9.8 (from v=u+at). The 2 is there because you double the time to get the time-of-flight.

Is it expensive? ;)

Does every school have dux program or something similar? I have a friend that's ranked 1st in every subject, with band sixes all-round and he doesn't know of any scholarship nominations.

Is this scholarship for the highest of achievers, like 99.5+, or open to anyone that a principal recommends?

What is the syringe for? =\

Woah matey, calm your farm.. You would do something that makes your already small taskbar even smaller...dickschnitzel. [I bet you tried it and realised it was much better :P]

PLEASE PLEASE PLEASE LOCK YOUR TASKBAR! (right click the taskbar -> 'Lock the taskbar')

You asked whether you should explain levitation in terms of eddy current induction or the Meissner effect (implying both are valid explanations). Eddy current induction is completely wrong.

Only physics to go, going to smash it.

Those graphs are the absolute easiest. Just use what you've learnt in 2U maths about rate of change and such, and finding max induced emf and such is as easy as pie.

The Meissner effect is completely separate to eddy current induction. If you place a magnet on a superconductor *while* it is being cooled, it will begin to rise into the air with NO initial change in magnetic flux (explained to me at USyd). The levitation occurs *only* due to the exclusion of...

Try sticking with economics for the first term, maybe you'll find that you enjoy it. I didn't really like prelim economics, but once we started getting into the Balance of Payments and Exchange Rates, I decided to stick with it.

Not even close. The DA-40 I fly comes with an autopilot, however I almost always fly it by hand. Well, a DA-40 is a far cry from a A330 or 777.. http://www.salon.com/2011/09/16/automation_2/singleton/