Recent content by marsesbars

Ah, the barber analogy! That really helped me understand Russell's Paradox (i didn't get it when Jie Du was explaining it) "In a small town, there is a barber who shaves people who do not shave themselves . This is the definition of a barber. Now the question is, does the barber shave...

Private tutors with a small group have an advantage - they can adapt to your needs and focus on weak areas to improve them. Tutors who teach big classes (say 30, 40 people) can't. I had a class tutor... it was basically like being at school again. The teacher had to teach school stuff, because...

You can read past student's answers to HSC physics questions in the "standards packs". It's very useful! To make best use of it, first do past HSC questions yourself, then go to the standards packs and compare your answer with other's. you can download standards packs here...

My teacher being the mad scientist he is, bought a kit so we could do the experiment in class. Apprarently it's not too expensive - you need a strong magnet (we used neodymium) a plastic dish and liquid nitrogen (which he says is cheaper than milk :rolleyes: ). It's a VERY nice experiment...

A better method! Just remembered a better method. You know the GM/(4pi^2) on the right hand side of the equation... Well, M is the mass of the thing being orbitted - which is the sun, for both Mercury and Earth - and everything else is constant, so the value of GM/(4pi^2) is the same for both...

1. If you have the value of 'M', the mass of the sun, then just plug it and 'r' into Kepler's Law to get 'T'. Simple. 2. If not, you can get 'M' by plugging into Kepler's Law the radius and period of earth's orbit around the sun. You know 'T' = 24 hours for earth (i hope ;) ) and 'r' is...

Total of 10 letters. 1) First, let's place the two N's. We can't have them at either end, so they must be in the middle 8 positions. Now the N's are indistinct from each other, so it's 8C2 ways to place them. 2) Place the rest of letters (ignore the N's for a moment). There are 8 left and...

About whether you should make notes on each dot-point... IMO you don't need to. But do what works for you! What worked for me was: for dot points they could make nasty written response questions about (social and ethical issues, the type of implementation that's best), I'd remember the main...

1) Hmm.. not sure if skill in 2U maths has much to do with success in SDD, they seem like very different subjects to me. What skills can you take from 2U that you can apply to SDD? Ah, the algorithms, yes, there's some (not much) mathematical algorithms. When I did the HSC SDD exam I thought...

Bon, I totally agree that the more practice you get at writing your own sorting/searching algorithms, the better. About PHP... you can write our own sorting code in PHP, it's just that PHP has functions (like 'asort' and 'rsort') that do it for you if you choose to use them. Most people do...

Actually, i did my major work as a webpage last year! We had to design a reservation system for a caravan park, and I decided to make it so you could access it with a browser :cool: It worked out pretty well in the end. You only ever saw the webpages when you used my finished project - you...

*discuss the role of the Michelson-Morley experiments in making determinations about competing theories Hmm.. my take on it is "how did the result of the MM experiment show how correct the theories of the day were?" I think the sentence 'making determinations about theories' means seeing...

Yes, save the money and buy yourself a good textbook or practice papers with solutions. It's more worth it, if you can motivate yourself to work. Textbook = $50 once off payment, tutoring=$20 a week, for lots of weeks.... My approach was to learn the theory in class, and then go through...

True, and also you've got to cover everything they can ask in an exam. You'll be very prepared for the HSC this way ... so I guess it's working smart but consistently

I've seen Coroneos use this notation in his polynomials section. 5|m means 5 divides perfectly into m (so, x|y means x is a factor of y)