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Agar jelly, bro.

We don't need to know it.

90.50.

~91.

Removing posters, study notes and formulae from around room. Clearing out all old crap from room. Gaming, partying and TV. Laters, brain cells.

The 4.58g sample contains the sulfate, and upon adding BaCl2, BaSO4 is precipitated out (which has the mass of 7.95g). Ba + SO4 = BaSO4. Number of moles of BaSO4 reacted = 7.95g * (1 mol/233.37g), which equals 3.4*10^-2 mol. [I just used the gram formula weight of Barium Sulfate to get the...

As the coil begins to rotate, a current is induced in the coil as it has a relatively changing magnetic field. Thus, the direction of the current induced will be such that it will oppose the change that created it (Lenz's Law) and consequently flow like it is in A as opposed to D.

Okay, so, basically throughout the year, you do school assessment tasks for each of your subjects. These, on their individual weighting, determine your final rank in your individual subject. Let's have a recurring example, let's say Physics. Say throughout the year, you do well and achieve a...

Do you mean low-mid 90s raw marks? As in, if you did a paper at home for say, Chemistry and marked it, you would score 90+? If so, you're looking at 99+. If not, it's highly dependant on your external performance. Anywhere from 85 to 99, most likely ~97.

95+. Dependant on performance in externals, as you are topping three subjects.

~83.

To find equation of tangent at a point; 1. Derive the equation of the curve. This finds a general expression for the gradient of the curve. (ie. this case, dy/dx = 2x). 2. Substitute in the specific x-value you want, this will tell you the gradient of the curve at that point, ie. the gradient of...

Ultimate Raw Mark Database thread.

http://community.boredofstudies.org/showthread.php?t=269573 Database of raw marks/cutoff predictions.

I don't think there's a 'smarter way' of solving it as especially early on, they throw ugly things at you to differentiate as you can be asked to differentiate anything later on. Just for good practice, basically. EDIT: Although, it could be sped up if you were to realise that u' = 0, and thus...

~86.

ATAR goal: 90+ Own ATAR prediction: ~85 Own prediction HSC exams results: Assessment/Exam/HSC English - 72/76/74 Chemistry - 72/74/73 Physics - 77/71/74 MX1 - 86/82/84 MX2 - 79/79/79 SOR - 72/68/70 (won't count) Required/Wishful HSC exam results for ATAR goal: Assessment/Exam/HSC English -...

Haha, it wasn't that hard. Hoping for more raw marks in the future so I can add to it. :)

S'all good. :) Yeah, I can imagine - and it didn't take that long, about ~3 hours all up.

Haha yeah man, I used all those marks that you posted in that thread. :P