Recent content by Solidmozza

Thanks a heap Voko, that did the trick! :)

Hi Voko, Thanks for the response, but I'm still a little stuck here. This is how I continued: dF = (∂F/∂c)dc + (∂F/∂b)db + (∂F/∂a)da Now (∂F/∂c)_{b,a} = (∂F/∂c) (is this not just (∂f/∂c)?) And (∂F/∂c)_{b,A} = (∂F/∂c) + (∂F/∂A)(∂A/∂c) But (∂A/∂c) = (c-bcosA)/a Hence...

Hi there, The Law of Cosines can be stated as a^2 = b^2 + c^2 - 2bccos(A) where a,b, and c are the sides of a triangle, and A is the angle opposite the side a. I have a function, f(b,c,A), with an associated set of partial derivatives (\frac{∂f}{∂c})_{b,A} etc. What I want to do is to...

My fault - I didn't make myself clear. I realize fully that you would need 4 dimensions to draw it on one graph, however what I meant was that they want us to draw two complex planes - the z plane (inputs) and a w plane (outputs). For instance, if we chose a subset A of the complex numbers such...

Ah sweet! That seems so obvious now - Silly me! ~~~~~ First, we consider the point on the highest point of the rope (ie where x=0). There are only 2 forces acting here: the combined weight force of the rope and the block, and the upward force. Since the whole thing is accelerating, we use...

Homework Statement A block with mass 'M' is attached to the lower end of a vertical, uniform rope with mass 'm' and length 'L'. A constant upward force 'F' is applied to the top of the rope, causing the rope and block to accelerate upward. Find the tension in the rope at a dstance 'x' from the...

Hi, Im doing a course in Differential Calculus and we are up to Euler's formula and representing complex functions of a complex variable. I'm finding it really difficult to visualise/sketch these types of functions: z|-->z^2 such that {z=x+2i}, or z|-->e^z = w such that {z=(-1+i)t | t e R...

Hi, This is more of a problem with concept rather than an actual mathematical problem, so forgive me if I don't use the template provided. I'm just having an issue with Newtons laws of motion. If I were to pull a box across a floor to the right with my hand, assuming that the mass of the box...

Hi, Sorry if I put this in the wrong forum. Ive just been writing up my notes and I can't seem to be able to write things like this: ^{12}_{6}C using microsoft word. If anybody could explain how I could write it in this, I'd be very appreciative. Thanks

Hi all, I was just wondering which would be the more beneficial first year uni subject to take given that I would like to major in either chemistry or physics - Discrete Mathematics or Statistics. The Discrete maths course "focuses on the enumeration of the Catalan Numbers" and is an...

I'm just wondering about this when you are making calculations of photon mass. For instance, determining the mass of a photon traveling at the speed of light and having a frequency of 100 Hz. Which equation do you use, KE = 0.5mv^2 or do you use E=mc^2 (both in conjunction with the E=hf...

Just bunting this up, because I really need help with this - just the answer and an explanation and I will be happily on my way... Really appreciate it!

:( I'm not sure what type of current the wire with the current produces in the circular loop... I need this explained, please =D. Once I understand this sort of thing I think I will be ok.. Here is my thinking - The wire with the current creates a magnetic field according to the right hand grip...

Daniel - I initially thought that the magnetic flux was decreasing in Q1 because the area was reducing, but I wasnt quite sure! Thus, the answer would be it flows clockwise for that one. But the 2nd one I am still a little stumped. How can you make it so that the current flows in the circle to...

Yep, I sure have. I must be missing something big here, and I know it. Still puzzled :(