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Nooooooooo. You have to talk about the movement of electrons and holes.

My teacher has a brilliant mathematical mind but he's not a good teacher. He should be working as a researcher or something, not wasting his time in a high school.

Our school does Python. Never touched VB and glad of it :)

Second post: 1. This is similar to Faraday's first motor. Consider only the radial magnetic field emanating from the north pole. So with the right-hand palm rule, your fingers should be pointing horizontally outwards toward the rod. The current moves down i.e. thumb is pointed downwards. It can...

This refers to your first post. 1. Connecting the ends allows a current to flow. By Lenz' law, this current is induced to oppose the motion that caused it i.e. to oppose the pendulum's swinging. 2. When the coil begins to rotate at P, it is cutting the maximum amount of flux lines, so at P the...

Scientists noticed that the electrons emitted during beta- decay had varying kinetic energies. Since many of these electrons had less than their predicted maximum kinetic energy, this violated the law of conservation of energy. Pauli proposed that another particle was emitted during beta decay...

5.91e-8 is the correct answer.

The viva voce is the least predictable assessment task and is often the one that will most influence the final ranks. You need to smash it. Here is what I did to get 9.5/10. 1. If you don't have a solid idea of what you want to do by now, get one. You can change it later. Right now you need to...

It definitely helped me. The consistency of A4 paper and the line spacing on the HSC booklets is very different to what you'd get in normal notebooks. My pen nib used to scribble and slide a lot in exam situations because I was unaccustomed to the paper. I fixed that for the HSC.

Charlie Kaufman and Quentin Tarantino are both brilliant and my favourites. I haven't checked out enough of the more 'classic' directors to make a judgement on whether they're the best or not. Scorsese's great. Out of the recent/more mainstream directors, Fincher, Nolan, Aronofsky are...

8. It can be explained mathematically. Derive the conditions for constant maximum height, substitute into the range equation, and you should see that velocity is the only variable (I'm assuming this works) 9. Think about it in terms of your blood having inertia. As you accelerate upwards, your...

The answer is B because it was known for a fact that EMR cannot be deflected by electricity. This was the nail in the coffin for the idea that cathode rays were waves. It's a "history of physics" question more than anything else.

Jesus Christ that was a horrendous genre question. They may as well have said "WRITE PRE-PREPARED RESPONSE IN THE LINES PROVIDED". What happened to extension english?

I just... can't. I'm so out of it. I don't feel like I ever 'got' extension english the way I got advanced and ext2. I have no idea how to write a good science fiction essay. Ranked 2nd, gonna let down my class =\ oh well.

Hey guys, wanna see something funny? (Wikipedia, 'Ultraviolet Catastrophe')

UNSW library, top floor.

3. electrons in an atom orbit in stationary states of stability and do not emit energy in these states. Sounds like what you've got. 4. Wave-particle duality. Matter is composed of particles after all.

In most cases, the structure of the code will reflect the time complexity. One loop that goes up to n will be O(n), two sets of these nested loops (like in the prime number example) will generally be O(n^2), etc. Recursive functions are a bit harder -- you usually have to visualise what's...

I think the manner in which programmers/computer scientists judge big-O complexity is actually equivalent to the mathematical definition -- we just think about it in 'about' terms, because they serve us a practical purpose. If I'm solving a problem and I have an algorithm that runs in O(n) time...

Hehe, you mathematicians. For us, O(n2) pretty much means 'about n2'.