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No Windows viruses will affect Macs due to the different architectures (unless you happen to be running Windows on your Mac, in which case the virus will affect Windows but not OS X). This is partly due to the small market share of Macs (it's much more profitable and fun to hack Windows), and...

Apple has a program called Boot Camp assistant (that's currently in beta and is free to download off Apple's website) that allows you to install Windows XP on a Mac. Then you can dual-boot OS X and XP, so when you want to run PC programs or games, you fire up XP. Alternatively, a company called...

It was an OK paper, though a bit more difficult than previous years. I lost around 8 odd marks through 6 and 7, with the probability and the projectile motion. Still, pretty confident with everything else. Just two more to go... I_F

Re: Maths EE2 - General thoughts on the exam It seemed like a relatively easy paper. I was pretty happy with it overall. A few dumb errors here or there, but oh well. :) I_F

Yes. Just. Spent the last 5-10 minutes checking over things. I_F

Yeah, I did bits of the nuclear reactor for the 7 marker. Did anyone else think it seemed like they wanted to find the most guarded way of asking "should Australia go nuclear?" I think I lost a mark or two on the cyclotron, and you never know with 7 mark questions, but overall I was quite...

Seven exams in 5 days, but it's all over, hooray! :) I_F

Stock footage that's set up - I doubt the kids are actually doing an exam, they're just told that they'll be on TV if they look busy. Like Kid.@admin said, it's worked out between school and media entity to look authentic. I_F

I would assume this has something to do with the molar mass of fertiliser, and that using 1.3 or 1.03g of fertiliser will give you simple and convenient numbers to work with in the calculation stage (i.e. moles = mass/molecular mass). It makes no real difference, it just might be easier to work...

When time is zero, V = 0 (V = A[1-e-kt], when t=0, V = A x (1-1) = 0). In other words, the initial volume is zero, therefore the volume after 5 minutes is A/4 since we're starting from scratch. I_F

Next time you start your computer go into AVG's Control Center and disable the email scanner. That should stop the error. You should also only have one AV program on your computer to avoid conflicts and excessive use of system resources. I'd recommend picking the one you like more and...

When you get an excellence award in the Chemistry Quiz.... and guessed half the questions... :p I_F

Ozone is comparatively more stable than the oxygen free radical. The oxygen free radical has an incomplete valence shell (with six electrons) and is hence very reactive as it wants to fill its valence shell and achieve stability. Ozone contains a double covalent bond and a coordinate covalent...

Never type your details into any site unless you've navigated there yourself using the Address bar. I_F

Net ionic equations have only those atoms taking part in a reaction. E.g. those atoms which remain in aqueous species on both sides of the neutral species reaction don't get included in the net ionic equation. To write it, simply write the ions taking part in the reaction and none of the others...

That seems wrong to me. A particle that's just past the centre of its motion in SHM can have positive velocity (assuming that we're taking this direction as positive) but negative acceleration (since it's slowing down). In my opinion, if you stick directly to your formulas like I did (in regard...

I assume this is cos x all to the power of -1. You use the chain rule: dy/dx = dy/du . du/dx where u = cos x dy/dx = -(cosx)-2.(-sinx) = sinx/cos2x = tan x sec x I_F

Wave-particle duality holds that light and matter exhibit properties of both waves and of particles. de Broglie took Einstein's E = mc2 and Planck's E = hf and equated them together to find an expression relating wavelength, frequency, and momentum. The de Broglie hypothesis stated that all...

2-chloro-1,3-butadiene is the monomer and it has the formula C4H5Cl. I'd assume that different isomers could be 1-chloro-2,3-butadiene, 1-chloro-2,4-butadiene, and 2-chloro-1,4-butadiene, though I'm not postive. There are two structural isomers - one with three fluorine atoms on one carbon, and...

When chemical bonds are formed they release energy and when they are broken they require energy. Comparatively, it takes less energy to break the bonds in an alkanol (C-H, C=O, C-O) and in oxygen (O=O) during combustion than is released by bonds forming in CO2 (C=O) and H2O (O-H) (products of...