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If youre talking to me bout the a = T/m, i knew that the equation implicitly took care of the gravitation forces and thrust on the astronaut, and explained that as such. I should've stated for other questions it would be much more useful to draw force diagrams to answer the questions rather...

Economics is NOT about memorisation. Like i know lot of it sounds like someone had too much to drink but essays test understanding and and reading the text bk is about regurgitations, u well never do well in the essays on reading txt bk alone. Doing practice essays and getting ur teacher to...

Hehe glad i could help, it must've been one big nightmare subbing it in and evaluating, its quite a feat doing that man im scared thinking about all the ps everywhere.

Originally i was divided on a) or b), but im just wondering about what the question means. Cause conventionally when ppl talk about the magnitude of current they mean rms rather than the absolute value sine curve that is DC, and you realli have to look at the coil to see how exactly it would...

Yeah i think one of the biggest prob is that they dun give you enough information about subject choices, like our school gave a presentation about the science subjects and what it involves and i realli appreciated it. Now to do science it scales pretty nice but its realli annoying to do, like...

TSP rocks, i know ppl that are milking it for all it can do, like i got a friend doing 40 cp because hes doing lots of TSP units, 3rd yr maths and TSP projects. I think TSP students are supposedly realli smart and if ur not u can use that to ur advantage. This mid sem break we get a free...

equation of normal x + py = 2ap + ap^3 now because its perpendicular to the normal and goes thru the origin y - 0 = xp - 0 (same gradient as tangent) y= xp p= y/x solving simultaneously x + y^2/x = 2ay/x + ay^3/x^3 times both sides by x^3 x^4 + x^2y^2 = 2ayx^2 + ay^3...

My guess is thats its a) its got a split ring commutator so its definitely DC. Like i want to see what the coil exatly looks like and if theres anything special about the resistor, but my guess is that its a constant resistance resistance meaning that it shouldnt realli make the magnitude of...

HSC science is completely shit, sorry i just realli hated it. Its not science at all, when u get into uni then u get into real science when they realli care about your understand of how things work and what realli happens instead of social implications and history crap. Like i understand its...

If you did the question using the formula a = T/m (ie without the -mg) and then did what u did, you would get the final answer. To understand why, think of it this way, first u said a = (T - mg)/m , when you plug this back into the f=ma for the astronaut you effectively forget about the force...