Recent content by clementc

Yeah, you need to derive it from scratch. This applies for escape velocity as well. It should be pretty straightforward anyway; takes literally 3 lines. For orbital velocity (you must have the first line as well): Fc = Fg mv²/r = GmM/r² v = sqrt (GM/r) For escape velocity (include first line)...

A current carrying conductor within a B field experiences a force (by the motor effect), which gives rise to the torque in a motor. When you have many of these conductors (like the many coils in a motor), each of these conductors experiences that force, adding up to give a much larger force and...

Can you show how you attempted these questions? Then I might be able to point you in the right direction/find where you went wrong in the working.

The short answer is theoretically yes - this is pretty much a spring-mass system (http://en.wikipedia.org/wiki/Simple_harmonic_motion#Mass_on_a_spring) So technically (as seen on the Wikipedia page) your period should be T = 2π sqrt(m/k), and your frequency f = 1/(2π) sqrt(k/m) So the square of...

Sorry no one answered your question for so long. I only just started checking out BOS again after like a year away from it. Do you still need help with this? =D

Lmao donuts. I'm pretty sure Gradueat in the Mathews food court sells them though

I like to think of pressure as kind of being how packed and crowded something is and how much people get pressed against the walls. So if you think of a room with 100 people. If we enlarged the room into something like a auditorium, would the room seem more packed or less packed? Would there...

Can someone explain how this can be right though, even though it matches the answer given? The first line is dimensionally incorrect, as you are equating a force with a mass. The question says that it wants the weight there to be 0.01 of the weight on the earth's surface. What I did was this...

Do you mean a justification for the method used? If so can you tell us what you did in the practical? Thanks =D

There aren't many formulae at all LOL. They've pretty much stripped it down to the barest backbone as much as possible; any further and the subject would be English essay writing.

The thing about Netbank is, I'm not sure you're allowed to conduct transfers and stuff through it. I though that the only thing you can do with it is transfer into your streamline account (Smart Access or whatever), and from there so the transactions. Also, you can't pay using a Keycard. What...

Just out of interest, is it true Mr. Woodhouse (head teacher of maths at James Ruse) is the head of the maths department at Discovery?

They charge quite a lot. I can't remember how much exactly; you have to actually go in person for her to quote the prices. I think it was over $80 per lesson or something (can't remember, probably went up, but then again most tutoring colleges these days are around that price). The annoying...

To think I spent 10min typing that beautiful review up for you. BOOOO =(