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Mosman high is such a dark horse, 58th from 171st.

If you find something hard, do it until you get it. You can't learn harder integration without knowing integration back to front.

Yeah, I see what your saying now. I'll change it.

http://en.wikibooks.org/wiki/A-level_Physics/Forces,_Fields_and_Energy/Electromagnetism L is the value of the length of wire, not the length of wire perpendicular to the field. The inclusion of the sin(theta) remedies this by finding the length of the wire perpendicular to the field. They give...

Reliability is about getting results in a small range, isn't it? By removing errors we are removing the size of outliers... Accuracy is how correct the answer is. So we could have ten oscillations but our method could be flawed so accuracy isn't increased. But by minimising the size of errors we...

The question was actually in my trial and I did the same calculation as you and picked the wrong multiple choice.

Read the bit after the multiple choice about number 8. I explain the working out. How would you approach the question if the length of the wire was 0.2?

I wrote these myself from what I could remember of the exam and by the answers on the forum. I got bored so I might do some more later. If people could post exam questions that would be great. Here it is

nope, copyright issues.

It is a pity the principle of relativity doesn't apply to non inertial frames of reference, AKA circular motion.

for 8, you ignore the angle as they already give you the length of wire going through the magnetic field at the appropriate angle. for 14, it is d. You take the negative derivative, refer to this: http://en.wikipedia.org/wiki/Faraday's_law_of_induction for 20 I put B, I hope it is right.

I just calculated power loss, I think B had teh lowest so I rolled with that.

Okay bitchs let me explain. So tower one is in the same frame of reference as the point of earth which is above. As far as we are concerned it stays above that point and it is motionless, non accelerating etc. So the ball drops straight down. Now, tower number two. It is practically orbiting...

What I find confusing is that for a current to be induced doesn't that magnet's field have to penetrate the interior for a brief amount of time? or is the interaction between magnetic fields which creates the current.

A Material, which below a certain critical temperature, has zero resistance due to a population of electron pairs which experience net attraction.

I Read this: A superconductor will not allow a magnetic field to penetrate its interior. An external magnetic field causes currents to flow inside the super conductor. These currents generate a magnetic field inside the superconductor that just balances the field that would have otherwise...

p-type has more holes and less negative charge carriers, n-type has less holes and more negative charge carriers.

Drop VA, it is harder to salvage any mistake you make in that course. Keep chemistry. Are you sure you want to do medicine, you haven't got maths.... It's going to be harder for you not having maths than not having anything else.

Doesn't mean they aren't a part of the model.

I did Hsc and prelim chemistry in year 11; easily done. Got 88.