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Just got the timetable today. Bleh. Would have to come every day except Thrusday in week 8, and come again on Monday the week after. And my school's making everyone doing 4u maths to do the 2u test too. Even those who does only 10 units and therefore definitely keeping 4u (OK I don't do 10 units...

The ball will have a constant angular velocity when the force exerted on it is the same for all parts of its motion in an orbit; and since it's coming from the same source, the ball is at the same distance away from it at all times ie. it moves in a circle (constant radius) around the source...

Uhh...looks to me as if the ball's gonna spin in the same direction for both :p Or is the force applied to the top of the ball for it to undergo backspin?

You could choose another option at your school?

Thanks to everyone who wished me happy birthday yesterday :) (And yes SS I saw that white text <.<) Today this year's year 12 at my school had their book sale day, where they bring all the notes/textbooks and sell them to us for a reduced price. I didn't buy any though, but my friend got a...

Not sure. But either Med or Astro, I wanna do the latter. My school's always done Med before though, but think the teacher *might* be wavering about it...*fingers crossed* :D :D :D lol, why didn't you vote then SS? :p Really? And my physics teacher was saying the other day that it's one of...

Define "backspin" and "topspin" for me please :o

A global maximum is the point where the function achieves its greatest value for all x values in the domain, and similarly for a global minimum, the least. You'd probably be required to find the global maximum/minimum within its domain or within part of its domain, where you'd just find all the...

The most straightforward solution for both, sub all three points into the general formula (x-h)2=4a(y-k) and solve simultaneously for a, h, k :)

Just back from chem excursion. Meh, a bit pointless, going on a filtration plant in a hot day like this... And now they wouldn't let us home till something like 2:30. The teachers say that they're not allowed to even though we got back at, 1:30pm :mad1:

I got the textbook from the school - the fourth one for 4u actually, plus another one we already have for 3u. So it does look like I need some organisation of the stuff in my locker...:p So maybe ask your school where to get it?

Re: Olympiads Don't worry Wooz, one contest doesn't mean everything :) As you said bio is still your best subject :D

The only thing we've been doing is complex numbers. Well, that's the only thing that's gonna be in the test, anyhow :p

OMEGEE! Finally. It's open! :lol: (Nice bday present for me, hee :D)

Do you mean multiple choice?

Put simply, Valid = results are obtained using methods that correctly and effectively measure what was aimed to measure. Reliable = similar results may be obtained when the same procedures are repeated. I remember there was these bullseye diagrams that show the difference between the two as...

Heh, I'd say a lot of people would agree with you :p

What's wrong with doing 12 units? :D You know, you won't necessarily get higher marks for the 10 units that's gonna count if you just do 10 instead of 12 :p

I should stop slacking off and start doing some work. Haven't done any for ages <.< And the assessments start in two weeks :o

And use Pascal's triangle for part (a) too, seeing that a number in a row is equal to the two numbers directly above it in the previous row ie. nCr + nCr+1 = n+1Cr+1. wtg for Pascal's triangle :D