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Computerfaction? I remember a user called daedalus trading for essays for his chem summaries from computerfaction.com.au.. anyways if those notes are the same, then yes they are very good notes :) edit : Just wondering, if the whole state gets really high, does that mean scaling goes down?

nope, scales display in kg wT. :p Because the question says specifically that it is calibrated for the earth or designed for earth, then even if they have an inbuilt acceleration sensor, they would perform as if they are on the earth.

The derivatives are very very complicated., those thetas hurt my eyes! How much marks would this question worth? I hope i'll never get one of these questions in a real HSC :D reminds me of the CSSA..

Wear a "I am doing 4unit" t-shirt in your HSC exam :D

I did a mistake on the rate of change, it is 12 times the value of that, i was thinking minute arrow instead of hours :) Anwyays, aren't you supposed to maximise the speed? "At the moment when the distance between the two tips is increasing most rapidly" edit 2: For the second part, my...

Yeah, i was thinking some advanced trig.. did you get 25-24 cos(11@) as D²?

Is the distance between them sqrt(7) cm? rate of change 1.237 per second?

For the hour arm: let H_x = 3cos(@) H_y = 3sin(@) For the minute arm: let M_x = 4cos(12@) M_y = 4sin(12@) D² = (4cos(12@) - 3cos(@))² + (4sin(12@) - 3sin(@))² where D is distance between the two tips...

A trial HSC exam? That's interesting, where can I get some infos? I could probably get some friends to come if the prices are good :)

a bit too late :p but for those prelim kids, not relly :)

40kg. I typed up proof that should disprove beyond doubt that 40kg is wrong anyways :) Maniac can speak elloquently there :)

That's because of Tesla. Tesla went to edison's DC company, but then soon quit. After that, tesla sold the AC patents to westinghouse, and westinghouse owned DC soonafter. Hence, Tesla owned Edison. It's kind-of funny, because tesla worked for less than a year at Edison's company before...

But those simple minded people forgot that weights can't measure your mass in the moon / mars, since it was designed for the earth. :p Repeating in the same school? That's very brave actually..

that's 2unit isn't it?

I have, but the internal assessment mark was so botched, I deserved it because of bludging. Hence, I'm repeating. Good thing i was accelerated, so the shame of repeating is less than half. Imagine repeating full year! I'd have to move school for that :p Can someone confirm the third...

I just realised jacaranda has no medical physics section..

Ah i got it now. thanks :D

So, let Bob throw a coin twice, and penny once. There is a 1/2 chance of bob getting more heads than penny? I still don't get it..

Free dot point for you :p It is seemingly impossible to imagine the method people used to diagnose cancer before the invention of x-rays. It's invention has allowed a much easier diagnosis method for doctors. Prior to these imaging techniques, the only way a scientists can learn more about...

Hey, if it really is 50-50, next time you want to toss a coin with someone, toss twice and point to this thread :) Im thinking the chance of getting more should be in the ratio of n+1:n..