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I've never seen that in any textbook I've read, weird. Was it crookes who did that experiment? That then would make sense about the whole disagreement.

That's the thing though isn't it, :confused: The only experiment that went against cathode rays being a charged particle was Hertz' experiment where it wasn't deflected by his electric fields, but that only showed they weren't charged. Oh well, I'll have to interrogate my teacher when I see...

So regarding my initial statement (I edited it like 50 times so you probably saw an older version, trying to wrap my head around my thoughts lol), What caused them, when the paddle wheel experiment first occurred, to not just assume that it was the cathode rays transferring momentum and ending...

Your board of studies links aren't working for me ._. Even when I tried manually typing the url, guess is something wrong on my half. Also, they didn't know it was due to heating until a while after the experiment was first carried out though did they? (the Wikipedia article said JJ Thomason...

So the inconsistent behaviour of cathode rays was due to Hertz concluding that it was a wave as his experiments showed that they were not deflected by electric fields, which occurred because his electric field was not strong enough so that there was no observable change in direction (right?)...

Oops yeah sorry, I got mixed up. My teacher said photocurrent doesn't increase only when intensity is kept constant since its energy per area per second... so then dot point is correct also. cheers guys

Anyone know where I can find sample creatives or creatives from past students so I know what kind of level of writing a band 6 requires?

For 3.12.5 in phy dot pt, it says: "Identify two ways the photocurrent from the solar cell could be increased, and justify each way" The answer of which is: "Increase the frequency of the incident light. The higher the frequency, the more energy the photon carries (E=hf), so each photon will...

Does increasing the surface area of a solarcell increase photocurrent? My teacher said increasing the frequency of incident light, and hence the kinetic energy of electrons, does not affect the current. Dot point disagrees. Can anyone shed light on this please. (unintentional pun)

For Co-op, when it says minimum of 96 atar, is that all they look into for atars? Will someone with a 99atar be more likely to get in as opposed to someone that got an 98? One of the requirements it says on the unsw page is "Is active in school or community activities". Does community...

You are probably trying to do 2-3 steps of working out in one step, causing you to do more maths than you may be capable of in your head. Look at how your errors occurred, if it happens when you are skipping a step in your working.. then that's probably it. When you try to do multiple steps in...

If we want to insert a word of our own into a quote, can we just put it in brackets? what if we want to change the tense of a word, can we also do that? eg: "they select(ed) them"

Is anyone else having a hard time finding techniques? I've written two paragraphs for an essay and I feel like I can't find a new technique without repeating them. The book is so mundane it makes me want to harass whichever one of my teacher's made us study this :evilfire:

Sorry to intrude but what is the difference between a co-op program and a regular one? Is it just work experience during uni? Is it something everyone wants to do/achieve, or only 'right' for some people with certain attributes/goals? Also, I'm planning to most likely do actuarial and economics...

If the acceleration has x in it though, you cant integrate normally can you, to find velocity in terms of t? You have to use the 1/2v^2 to integrate and get v in terms of x, then reciprocate it to get dt/dx, then integrate again and rearrange to get displacement in terms of time, and then...

Thanks, I actually posted this in the wrong forum, should be for 3u haha, but guess its still relevant. I was getting confused with how the whole derivative notations linked up so thanks for confirming this, helps explain a lot lol.

If given the acceleration as a function of displacement, (d^2x/dt^2), do you integrate normally to find the velocity as a function of time, and use the (v^2)/2 thingy to find velocity also as a function of displacement?

What if one was to change it so far as "Totalitarian government can be seen to be analysed in George Orwell's novel 1984 with the intent of acknowledging its potential for oppression in Western culture." The only nouns the are the same (from a quick check) are "totalitarian government"...

So taking something like "1984 is a political novel written with the purpose of warning readers in the West of the dangers of totalitarian government." (topic sentence of sparknotes) but instead writing something, off the top of my head, like "Totalitarian government can be seen to be focused...

I was also curious about this a few days ago... what if you take a sentence and change it into your style, using synonyms for the key verbs, rearranging the sentence, chopping some words out, etc, so that it isn't copied word for word, but the general jist of what you are saying is the same...