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thanks so much for the rep. All the best for the exams :)

Keep your head up sarah. Just got to practice the calculations :) That's what im worried about. The theory is good to go!

Yeh i so know imaginary numbers lol.

lol u need to convert 1000kg into 1,000,000g :)

Maths is probably the easiest to study for. So yeh you can do 45 hours np.

Im sure you will be able to adapt your story to the question. My guess will be 'Your in a youth competition where you need to submit a piece of writing on Belonging' Write a short story based on the concept of belonging. Or words to that effect.

i Just checked the answers they dont use the ppm at the start :( Ahh so simple cant believe i got this wrong. they found moles(CaC03) which were 10000 .: moles of C02 = 10000 .: Volume = 10000x 24.79 .: Volume to pass in tree = 247900/3.8x10^-4 =6.52x10^8L

Nice ideas guys :)

Mines 'Confrontation' HBU?

Ahh these answers take too long to type up :( (secx)^2 = sec^2x .:V=pi Fpi/3-0 (sec^2x) dx .: V=pi(tanx)pi/3-o .:V=pi(root3-0) .:V=piroot3 units cubed. Differentiate cosx/x

sin^2x = u^2 .:cos^2x = 1-sin^2x =(1-U^2)^-1? Maybe i need sec^2x in there.

You are set for 99+ easy. Keep up the work.

y=1-x .: 2x-(1-x) = 5 .: 2x-1 + x = 5 .:3x+6 .:x=2 sub back into y=1-x .:y=-1 .: (2,-1) The third term of an arithmetic series is 32 and the sixth term is 17. a)find the common difference. b)find the sum of the first 10 terms.

I didnt get it right. I got 1.5/2 You need to take into account the 0.038% ppm at the start. I didnt :(

You need to solve for x Go to Q 5 2000 paper. you will see it there.

OMG 57 = Aligned 79 :O in Chemistryy!!

(x-4)^2 + (y+3)^2 = 25 at (4,2) (0)^2 + (5)^2= 25 therefore satisfies. Solve tanx=2 for 0 < x < 2pi

It works maybe you didnt change into metres? Or you didnt use the correct radius(ie you left as diameter) read darkchild's post and see where you went wrong.

He obviously misinterpreted the question. it's time dilation mate.

change in GPE= GPEFinal-GPEInitial