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Yeah, took us approximately one term.

12 units.:read:

a) Na(s)+H20(l)----> NaO(aq)+H2(g), not 100% sure on this , but if it is right then, since Na is a metal, it's oxide will produce a base, there fore an increase in OH- ions, thus the solution becomes more basic. b) P=1/V, therefore an increase in pressure, causes a decrease in volume, hence the...

Aim, Equipment Method Diagram Results Discussion ( questions and answers also go here) Conclusion

Wow, did you actually do all those papers? 0_0

So how many related texts are you 2008'ers doing, since the stimujlus booklet has been removed, So far i've done two but i'm unsure as to whether i should get a third? could someone please shed some light on this , my teacher was unsure about this , so how many have your teachers recommended?

1)f(x)=ax^2-6x+b f'(x)= 2ax-6, since there is a stationary point at (3.-2) f'(3)=6a-6=0 therefore, a=1 Since the y-value at 3 is -2 f(3)=9-18+b=-2 Therefore, by rearranging b=7 i.e. f(x)=x^2-6x+7 2)Is basically the same thing. 3)f(x)=ax^2+ bx + c f'(x)=2ax+b at x=1 f'(x)=0 i.e...

Can someone explain to me why? When an increase in temperature occurs, the reaction will favour the endothermic side. and When a decrease in temperature occurs, the reaction will favour the exothermic side. Thanks :)

That, 68% shows you got some foundation and there's no point doing year 11 work in year 12 >.>.

Ahh okay, thanks for that.

For 1) i think you just use F=mv^2/r as tension is a force. T=2nr/V^2 n stands for pi.

Lol, so did you guys consistently study for Ipt or just cram the night before. :jaw:

Lol, even if he does edit it out, the number will still be present in A plus's quote. :rofl:

A formula for van allen belts or do you mean g=Gm/r^2 Do you mean Ionisation blackout 0_0?

Maybe those schools didn't get any band 6's? :bomb:

Isnt PHB, Polyhydroxbutanoate? 0_0

gather secondary information to predict the value of acceleration due to gravity on other planets For this dot point do we need to memorise all the values of acceleration for various planets, or simply just know the formula, g=GM/r^2 Also my school's textbook, jacaranda has all this...

How come you neglected the weight? , that is the formula is meant to be T-mg/m

If a rocket had a mass of 32000kg, of which 85% is fuel, and a thrust of 400000N determine: a) the rate of acceleration and g force at lift-off b) the rate of acceleration and g-force just prior to exhastion of the fuel, Assume it is travelling horizontally and acceleration up to orbital...

It's meant to be 4x18, because the polymer of glucose, cellulose/starch, is a condensation polymer, thus when they polymerise water is released.