Recent content by Sekonda

Hey, I was wondering if anyone had any recommendations for books that provide an introduction or a detailed explanation on the whole 4 vectors, tensors and using indicial notation (in the context of General Relativity or Quantum Field) - basically anything that explains to me how to...

Solved, Thanks

Hey, It's been a while since I've dealt with the 'Weight' concept, if we have a string with N molecules and 'n' of the N molecules are in an excited state and the rest (N-n) molecules are in a ground state - what is the weight of this system? Any help would be appreciated, SK

... We are told the wavelengths of the waves (in the vacuum) are both 589nm... Still, is this the correct way to approach the question? I get an answer of about 14.7μm=d

1. Hey, the question I believe should be fairly simple to solve but it's been a while since I've looked over such content. There are two light waves that enter a crytstal at the same time, one linearly polarised parallel to the optic axis and one perpendicular to the optic axis, they have...

Thanks Yeah I forgot the mc^2 term - there should be one in that second =, thanks! I thought the invariant for the lab frame has to be the same in any frame and for the CoM frame there's no momentum term due to equal and opposite momenta's of the particles. I guess I mean the mass of the...

Thanks Thanks I'll go and try that and see where that leads me, I think I tried this before but was obviously doing something wrong as the force wasn't central in the end... Cheers! SK

Cheers man, I guess your suggestion for part (b) would make sense... I'll do that now, Thanks, SK

Hey, My question is with part (c) of the below: I wanted to check that I had done this write as I struggle to determine the correct invariants for each frame... despite their invariance. So for the lab frame I had \frac{\...

Hey, My question concerns parts (a), (b) and (c) in the below. In part (a) we're asked to find the energy, velocity and momentum of the incoming particle AND then to find gamma, however I know the energy of the incoming particle is simply 3MeV but I'm not sure how to find the velocity...

Hey, I'm having trouble with part (d) of the question displayed below: I reckon I'm doing the θ Euler-Lagrange equation wrong, I get : \frac{\mathrm{d} }{\mathrm{d} t}(\frac{\partial L}{\partial \dot{\theta}})-\frac{\partial L}{\partial \theta}=\frac{\mathrm{d} }{\mathrm{d}...

Thanks Naima! Thanks Naima, I thought I was misinterpreting the author. Thanks for being patient and explaining this to me! Very much appreciated! SK

Thanks Thanks naima for your input - didn't see this till just now. The 3*3 matrices of SU(3) represent the transformations or rotations of colours in colour space that are allowed, the octet states represent the 8 gluons which are permanently confined and the singlet state represents a...

Thanks chestermiller & Rap This is what Rap was getting at - but I was having trouble finding/interpreting the info. from the previous document. Though this information has now resolved my current issue! So thanks chestermiller & Rap - but I may be back with a further query. Thanks again!

Ha this is what I mean about 'being an idiot' or just assuming the question is more simple than it is in principle. I'm not quite sure what I mean with reference to the fugacity ratio, I'm not sure if a fugacity ratio of 0.9 would mean that the ideal gas result is within a 10% deviation of the...