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Ok I gave this a crack but nah got nowhere. Non-linear, non-separable ODE's is something I've never encountered before. Tried substitutions, not exact, not separable, integrating factor does not work. Can anyone give me a tip on what can be done for this (do keep in mind I'm only in first year...

In relation how everything it is calculated for PHYS11X1 and I would think for every other course with a minimum requirement such as having to pass the final exam to pass the course:

Even better, let u = (2x + 7)^(1/2) so that you don't have to worry about negative case when taking the squar3root with what you did above.

I tried for Sem 1 next year. But then something pointed to NULL and hence seg fault like your location :haha:

The answer is C. I did it using Ampere's Law, (the proper method involves integration actually and it makes more sense but I won't go through in detail here unless someone wants it in particular) and actually found the proper relationship for the magnetic field due to a current carrying...

Do you mean as in adding vectors head to tail? I think you need to know how to do it and calculate it for HSC, but can't remember exactly if it is in the syllabus or not, so I could be wrong.

It's not stupid. You can have roundabouts which merge from two lanes to one lane and also many drivers cross over lane lines because they are too lazy to maneuvre their car properly (I take the same roundabout every day and pretty much everyday I find myself flashing my high beam once for less...

$Using:$ \frac{ {\begin{pmatrix} 4 \\ 3 \\ 0 \end{pmatrix}} \cdot { \begin{pmatrix} x \\ y \\ z \end{pmatrix}} }{ {\left | \begin{pmatrix} 4 \\ 3 \\ 0 \end{pmatrix} \right |} \cdot {\left | \begin{pmatrix} x \\ y \\ z \end{pmatrix} \right |} } \ = \ \cos{45 $^{\circ}$ \degree} \ = \...

Lol everyone has been asking about these pracs lately. There's a few threads about pracs (especially the pendulum one) which you can look through in the space section: http://community.boredofstudies.org/263/space/ To your specific prac, I'm guessing you are fine with orbital velocity now and...

Put water in a plastic see through container, put it on some sort of trolley or something (I guess you can improvise with this using a toy or something) and do the same thing as I described. If there is no force acting on the system (inertial frame) then you will observe the water's surface to...

93 English is killing you. Improve that by at least 10 ranks to get a much better mark.

Its based relatively on how well your class went in the externals. So really you can't know that at the moment, but in theory if you put in a constant effort all year then you should have a similar assessment mark. In practice, you can have students ranked below you doing better than you in the...

Both ways work I guess. However I like how Parvee's method gives you an indication of how off your results were and approximately by what factor.

You can have a cart with a ceiling which you can hang a pendulum onto. Then you can give it a push and let it move uniformly (ideally this will give as close to a constant pace as possible, neglecting friction), and then try again with pushing it by hand all the way. You will see the pendulum...

re: HSC Physics Marathon Archive I got something a bit different actually (2.8227 E 24) but not sure though as I could have made a mistake somewhere. But yeah post up another question.

You want: g \ = \ \frac{4 \pi ^2 L}{T^2} \ = \ 4 \pi ^ 2 \ \frac{L}{T^2} You also want the gradient of the graph. Hence your y-axis is L and your x-axis is T^2. As a result, you multiply the gradient of that graph by 4 \pi ^2 and the resulting experimental result you obtained for...

re: HSC Physics Marathon Archive Good idea. I'll post some questions up in a timely manner mainly on the other two core modules (however, get the question already up there answered first!).

Not sure but are there recovery mechanisms on the external? You might be able to recover a few things that way. Otherwise, if not then you've probably lost the files.

Dehydrated Octanol 4 dayz.