Recent content by RyanTG

Homework Statement The J/Ψ has mass 3097 MeV, width 87 keV and equal branching ratios of 6% to e+e− and µ+µ− final states. What would you expect for these branching ratios if the J/Ψ decayed only electromagnetically? What does this tell you about the “strength” of the strong interaction in...

I'm revising for my introductory particle physics exam and I've noticed SU(3) pop up a few times, it was never really explained and I don't really understand what it means. For example when talking about the conservation law of Colour, it says the symmetry is phase invariance under SU(3)...

figured it out finally i think... my answers were correct in that image, my method is wrong but just happened to be correct in that instance.

You know what I don't even know anymore...

Oh I think I get it now. Is the correct answer: I1 = -5A, I2 = 5.5A? Should the maxwell loop always go in the direction that the current would flow in that part of the circuit? So for the second half, it should go positive to negative, so my loop is the wrong way around? And I've been...

I'm sorry man, it is saved vertically on my computer, I didn't purposefully upload it to be awkward. There is no harm in just saving it to your computer and rotating it. I don't understand why I would be denied help because of something as petty as that. Here you go, rotated. Having...

I've attached the circuit layout. Q) Find the current flowing through each of the resistors. I've uploaded my attempt. What am I doing wrong? I thoroughly do not understand kirchhoff laws. I follow the sign rules, I try to do the maxwell loop thing and I'm still getting wrong...

I think I understand the second part now, but for the first: y(0,t)=y(L,t)=0 is therefore the answer for the first question? It says that both ends of the wire are fixed doesn't it? x = 0 and x = L? Okay I think that makes sense now it has been explained, thanks a lot!

I don't really understand boundary conditions and I've been trying to research it for ages now but to no real avail. I understand what boundary conditions are, I think. You need them along with the initial conditions of a wire/string in order to describe the shape of motion of the string. I...

Sorry for being so incompetent... Is this correct? kAcos(kL)=0 Disregarding the exponential part since it is a constant. What do I do from here to get the answer in my mark scheme? Using the above I just end up with kL = 1, k = 1/L, surely? Or L = 1/k. I haven't done a question...

So I have to differentiate (x,L) = Asin(kL)e(-ivknt)? It seems quite a bit of work for a question like this...

Homework Statement The displacement, y(x; t), of a tight string of length, L, satisfies the conditions y(0, t) = \frac{\delta y}{\delta x}(L,t) = 0 The wave velocity in the string is v. a) Explain what is meant by a normal mode. Give the form of the displacement, y(x; t), for the normal...