|Oct8-05, 10:01 PM||#1|
I've been trying to use energy and momentum conservation in this problem but it didn't work out or I got a quadratic equation and got 3 different answers. Can anyone help me please. Here is the problem
The Gorgon ( rest mass of 3000 MeV/c^2) decays into a photon (i.e, a particle of light) and Lexicon (rest mass of 1800 MeV/c^2).
The Gorgon was initially at rest. The photon is emitted in the -x direction and the Lexicon is in the +x direction. Find the energy of the photon and the final velocity of the Lexicon.
Thanks a lot
|Oct8-05, 11:03 PM||#2|
Please show what you have done.
Think - Conservation of energy and conservation of momentum.
The momentum of a photon, p = E/c
Remember there is rest energy and kinetic energy, so total energy must be conserved, and momentum.
|Oct9-05, 02:50 AM||#3|
I have Eg = Ep + El and the same thing for p
also E = square root of [(pc)^2 + (mc^2)^2]
and pc of photon will be equal -pc of elicon.
Substitute both of the above into the conservation of energy equation. I only have one unknow which is p of photon. But then I got a quandratic equation with 3 different answers. I dunno what to do next.
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