Recent content by psychotropic

when are the other merit lists published?

1. You can either write one long story, or a suite of short stories (no more than 4/5). If you are writing a suite, you must make sure that the stories are thematically linked, and when looked at together, are greater than the sum of the parts 2. Being able to write and do well in Extension 2...

a polystyrene cup?

13 has to be D. If we accept the premise that the writing on the cup means nothing and is simply a trick, then the cup could be made from either PE or polystyrene (polystyrene cups are very popular). It would hence seem that this would mean A and B are correct, which cannot be the case. However...

re: HSC Chemistry Marathon Archive An indicator is a substance that, in solution, changes colour depending on the substance that is added to it. This colour can be used to approximate the pH of the solution, as indicators are known to have certain colours at different pH levels pH...

I also did a critical essay this year. My advice would be to start off fairly broad, perhaps with an investigation of a genre, or literary paradigm, a particular author, or texts across time that you think share some interesting parallels. However, after your initial 6-7 weeks of research...

Case I is incorrect as you have to consider which person is excluded. this means that you have to multiple case 1 by 6, yielding 4020

the answer to 10 is b

re: HSC Physics Marathon Archive using V = 4pir^3/3 We find r = 62.035m then we use g = GM/r^2 and we get g = 1.7332 x 10^-11 Then we use v^2 = u^2 + 2 ar, with v = o and r = 1125m. This yields u = 1.97 x 10^-4 m/s Using the symmetry of the parabola, the velocity which it hits his head with is...

re: HSC Physics Marathon Archive the speed is 1.97 x 10^-4 m/s

re: HSC Physics Marathon Archive I believe the RHS should be on v because t = d/v

re: HSC Physics Marathon Archive changed? i think i typed something in the calculator incorrectly. As to your qn: t = d/v 3.28 = 4.37c(1-v^2/c^2)^0.5/v squaring both sides and rearranging: v^2 (4.37^2 + 3.28^2) = (4.37c)^2 which gives the answer. I forgot to square the 3.28 when i squared...

re: HSC Physics Marathon Archive Due to the effect of length contraction, the journey will appear less than 4.367 light years for those within the spacecraft, which means that they may be able to journey in 3.28 years. Quantitatively, d = 4.367*c(1-v^2/v^2)^0.5 t = d/v Using these equations...

re: HSC Physics Marathon Archive look at the field lines from the north and south poles

re: HSC Chemistry Marathon Archive What are the advantages and the disadvantages of the Bronsted-Lowry theory of acids and bases?