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Re: 回复: Re: ~~Mathematics Revising Game~~ haha lol my bad, misinterpretation, i thought it was sec^2(2x)

haha agreed, these topics that overlap with other courses just makes life so much eaiser.

Re: 回复: Re: ~~Mathematics Revising Game~~ I dont think this is possible, i got up to 1/2[tan2pi/4] = 1/2[tan pi/2] = Mathematical error?

A nice beauuutiful 7 marker on radioisotopes would be nice. Im prolly gunna get shot for saying that.

Space wasn't it? A rocketry sicentist and their contributions to, well, i guess you could say space travel.

Are you kidding? That was my assessment task for that unit. What a waste of time heh.

Yeah I completely agree. It's worse enough being compulsory let alone that the "best 2 uints" of english are always taken into account for your UAI. A very big sigghhh indeed.

Yeah a question about esters sounds likely. I reckon: - What steps are taken to purify and sanitise water (hasn't been something like this since hsc 2002) - An Ethanol renewable resource question with a twist - Haber process and its significance in world history - A battery that you have studied...

Haha nice, I was just about to make this thread. I think possible questions they MIGHT ask this year are: - Eddy current braking or induction cookers - Michelson Morley, prolly why their experiment is so valued - Einstein and Plancks "parting of the ways", about the WW1 (pacifist vs nazi? lol)...

Yeah I had to teach my teacher this method lol, he didnt know it.

On another but similar note, does y = tan^-1x ever have a domain, or is it always "all real x?"

Sigh this would be the same for Gwen Harwood then. I hope they dont ask about Alter-Ego, ill be farked.

I feel like shit atm. Btw how many people have chem as their last exam?

Software, design and development. Its so shit, ill prolly start study for it after english. And it is on the same day as physics fuckinggg siggghhh.

thanks guys, very helpful.

A Satellite of mass 150kg is launched from Earth's surface into a uniform circular orbit of radius 7.5*10^6m. a) Calculate the magnitude of the gravitational potential energy Ep of the satellite. I got 8*10^9N, which I think is right. But then.. b) From this uniform circular orbit, the...

Thanks again. I hate these pH / mole / titration style questions, the concept never stuck with me.

Calculate the pH after 20mL of 0.01 mol/L sodium hydroxide is added to 50mL of 0.2mol/L hydrochloric acid. Include a balanced chemical equation in your answer. I think I've gotten the values for the pH for both the solutions, but what do I do now? thanks

Rightio thanks for that, I think I may have done it, or something similar to what you described tommykins.

Describe a first-hand investigation to demonstrate the effect on a generated electric current when the strength of the magnet is varied. (5 marks) Did anyone do this prac? If so, what did you do? We didnt do it....