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Consider a square, single coil of wire (ABCD) of side length 0.30 m which is free to rotate about its central axis and placed in a uniform magnetic field of 81 mT. The diagram shows this looking downwards onto the plane of the coil. Diagram: http://puu.sh/2Cioj When the coil is connected...

Right-Hand Grip/Screw Rule - Solenoids (thumb points to the north pole of the solenoid), to find current direction. If your fingers are facing you, the current will be down on the solenoid. If they aren't, the current will be up. - Finding direction of magnetic field around a current carrying...

If you're looking to get absolute top marks, any weighting counts. If you get 50% in a low weighting (15%) assessment task, that's still 7.5 marks you've automatically lost from 100. The highest you can get from that point onwards is only 92.5%. That's why I treat every task the same.

Having both Year 11 and 12 content in the exams would be terrible. There's way too much content to be able to revise in both years (except maths) that you'd be able to remember. Then it'd come down to rote learning, and not testing any real intelligence, making the system ineffective.

An 82 aligned to 86 in the past.

I used the Matrix reverse ATAR calculator and the Raw Mark Database 2.0.

In those subjects you'll need to get around these raw marks for a 90 ATAR (in your final HSC exams; internals/ranks can be a bit sketchy): Advanced English: 70% Extension English: 68% General Mathematics: 82% Modern History: 80% Business Studies: 77% SOR I: 82%

http://www.youtube.com/watch?v=gw77rIVeQvI http://www.youtube.com/watch?v=7DvTdyZuQNs http://www.youtube.com/watch?v=koB-5qezwn0 idk how to link properly

Done, and this survey made me think about some things: 1. For whatever reason, I can't really learn in a school environment. It isn't until I get home and revise that I truly learn what we were just taught. 2. When learning a brand new concept, the language it is written in must be very very...

So confused...is the negative sign simply because "descending down/toward Earth = -" and "ascending away from Earth = +". So that would make the work done positive since it's ascending, as someth1ing said? btw GPE doesn't have distance as a square.

But using either of those will give either a + or - result. Which one is correct?

Would any of these be correct? I'm not really sure what I'm doing but I tried.... (a) The y-axis is the period squared (T^2) of the pendulum in seconds which is the dependent variable, and the x-axis is the length of pendulum in metres, which is the independent variable. The 6 points show the...

In a trial HSC exam: Q22) A satellite is planned to be placed in a circular orbit 20 500km above the Earth's surface to be part of a GPS array. The satellite has a mass of 1000 kg. (radius of earth = 6380 km, mass not sure, maybe 6 x 10^24) (a) Calculate the GPE of the satellite before it is...

Oh shit I thought it was d^2, nvm then I don't really know what you mean about Q19?

I don't know how to work this one out. 15) In order to escape a planet's gravitational field, a projectile's initial velocity needs to be equal to the escape velocity. During its escape the projectile's kinetic energy is transformed into gravitational potential energy. A projectile is...

tbh I find it pretty easy. The last test I did I got 47/50 (topic test thing), and I made the literal stupidest mistake anyone could ever make. The question required you to use the sin rule, AND I FORGOT TO USE SIN. I used x/angle, rather than x/sin(angle). When I looked at it I couldn't help...

I was thinking about just grabbing a 3U textbook and learning it that way. I just figured it'd be pretty hard that way without assistance.

Because I didn't care about school back in Year 8/9/10, so I pretty much just got 60% for every test (I was in that "advanced" class 5.3 or whatever it was, but still). So I ended up actually choosing General, then transferred to 2U after a month then started trying. It was too late to choose...

Well I'll be going to a uni in Queensland which has a pre-req of Maths B, and Maths C is recommended. Not exactly sure what "Maths C" actually is, but now that you've mentioned the fact that they might start off from the very basics...

Once I finish school, I'm thinking of doing an Extension 1 bridging course. At the moment, I'm getting in the 90s for all the exams (official and topic). I've heard conflicting opinions on it: - Failure rate for those who only do 2U is greater than the failure rate of those who do 3U...