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umm, i know your extra HSC was answered, but, you gotta remember that the earth is spinning, which in itself is a horizontal component. and also after reaching a certain velocity, the satellite or what ever is usually ejected from the rocket at various angles depending on the desired orbital...

yup, dunno what mild steel is, you could explain that to me xD nickel gives it strength but you can't put in too much otherwise the chromium's oxide layer begins to "not work" sorry i don't have a technical term for it. so its a balance of usually 18%-8% chromium-nickel

awesome, thanks ^^

hmmm, next one is trials O.o im excited

Hi ^^ so i'm wondering, cause it was never really explained properly to me, why does a passivating metal produce it's little oxide shield against complete corrosion :s I'm a little confused, (also important cause i just found its a syllabus point xD)

well you actually don't need the equation of the line of the coke bottle, simpson's rule (for example) works just on function values, so all you need is the distance between your function values (once you have the width of the bottle you can just make a nice number) then just slap in the initial...

Ha, thought so, and just to astonish, this was a question in my half yearly xD fretting about whether i could do it through the whole test

Ok so i think this question is impossible without another piece of info, but i just wanna post it and see if anyone is amazing enough to get it ^^ --> Two planets orbit a star of mass 10^32 kg. Planet A has a mass of 10^24 kg and planet B a mass of 10^26 kg. Planet A is 1.5x10^11 m from the...

uh, im pretty sure including all visible spectrum its between 4x10^-7 and 7x10^-7, could be wrong though, google it or look at a blackbody curve ^^