Recent content by Minus1

could you please tell me what I am doing wrong, its really getting to me, i thought the momentum was (gamma).m.v, gamma.m=5000Gev and v is just the velocity, what am i doing wrong?

this is what i would write as the 4 vectors, in the lab frame they would be, P(1)=(5000GeV/c,5000GeV/c^2.v,0,0) =>first muon+ P(2)=(5000GeV/c,-5000GeV/c^2.v,0,0)=> 2nd muon- i assumed the initial speeds were the same as they had identical energies therefore P1+P2= (10000GeV/c,0,0,0) and as for...

A particle accelerator collides 5000 GeV muon+ with 5000 GeV muon- particles, producing two massive particles in the final state, one with a mass of 800 GeV and another particle with unknown mass m. a) write down the initial and final state momentum vectors b) by using the conservation of...

From what I see our current theory of gravity seems to very limited, it doesn't work on the quantum scale and now apparently when you extend it to sizes bigger than a few galaxies it doesn't seem to work either, in my own opinion i think its a bit far fetched just adding an unknown force to...

yh that's apparent to me too, but you've misunderstood, the question is about the relation of dark matter and energy with gravity, in that concept all 3 are related, and just for extra there's a good chance they are directly related, they both have "problems" with gravity, dark matter because...

Do you think dark matter and dark energy actually exist or have we just got the theory of gravity completely wrong but just haven't realized it yet?

One of the unstable isotopes of caesium undergoes beta decay, as a result of which it turns into an isotope of Barium, with the simultaneous emission of an electron and a neutrino. The Caesium isotope is 1.18 Mev/c^2 more massive than the Barium isotope. Assuming that the initial and...

Ahh, I see where I was going wrong now, that was plainly obvious, but from all this it does still seem to follow that the mathematics would still be the same, if for example someone with sufficient mathematical knowledge was put in another universe, he would be able describe the laws of that...

But if we just for now,consider another universe, i mean according to string theory we're just one of an infinite amount of universes, and each universe has its own set pf physical laws, but because mathematics is logical, surely it would be the same in every other universe, hence the laws of...

I was wondering, because mathematics is logical, its exists because of reasoning, not because of sorroundings, then surely it must be the same even if you live in another universe, 1+1=2, not because of daily experience but because of logic, you wouldn't expect to put two things together and...

Thanks for the warm welcome, I feel at home already

Thanks guys, I wish I could take you in the exam but I don't think they'd allow it, lol

A photon of energy E traveling in the +ve x direction collides elastically with an electron of mass m, moving in the opposite direction. After the collision the photon travels back along the -ve x direction with the same energy E. Use the conservation of energy and momentum to demonstrate...