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Here you go guys...Physics HSC 2015

Yeah me too :)

I think the graph would look something like this. I don't 100% remember where A, B, C and D was labelled and the graph's shape may be a bit inaccurate (so take this with a grain of salt) but you get the idea...:)

I don't agree with this part. The graph when the trolley is right under the magnet should have zero gradient, as the net force on the trolley would be zero. Remember Emf (induced) = -delta (phi)/delta (t). And phi = B (magnetic field strength) x A (area of the trolley affected by the magnetic...

I agree

Someone post the MCQ's pls....

I related it to Thompson's charge to mass ratio and said that the force due to electric field equals centripetal force on the electrons....

Which one????

+1

I got 60 degrees..... like iforgotmyname

I also wrote that the electron should start deflecting from the start of the electric field, not from the middle of it...

I also said that the value for g was an average in model x, but I think I also said that in model Y, the radius of Earth was assumed to be average as well, as when the Earth spins it bulges at the Equator and flattens at the poles. I said they give similar results because in both cases, Ep...

For the projectile question (14aii), I equated x = vtcos(theta) and x = (v^2sin2(theta))/g, as they both equal x. Then, simplifying on both sides, I get theta = sin-1 (1/√3)

Could you show the working out for this? Thanks

I guess since it's a discuss question...you might lose maybe 2 for the 5 marker, just because I think the question states "discuss it's use in the industry in terms of its properties..." But other than that, you should be fine for that one...

But instead of writing "lead-acid cell" in my response, I wrote "fuel cell" throughout even in th cost and practicality part. And I think a fuel cell has the same issues as lead-acid cell. Should I get at least two....for cost and practicality????

Damn it....just checked it's different. How many marks do you think I'd lose?

But isn't this outside the course?...

What did you guys put in for the battery 4-marker. I thought fuel cell is the same as lead-acid cell so I wrote all about it. If it isn't the same, then wouldn't fuel cell be outside the syllabus?

Guys, I am in Year 11 and am looking for maths extension 1 and preliminary books for both year 11 and 12. So if you have any links that you'd like to share, just post them below.................. :jump: