Recent content by 125.6

  1. 1

    Graduate Pf = Pi * (Vi/Vf)^5/3 (since gamma = 5/3 for a monatomic gas)

    Yeah, thanks The part i still don't understand is how the equation pf = pi*(vi/vf)^5/3 follow?
  2. 1

    Graduate Pf = Pi * (Vi/Vf)^5/3 (since gamma = 5/3 for a monatomic gas)

    One mole of an ideal monatomic gas, initially at 1 atm pressure, is surrounded by adiabatic walls in a container of volume 0.01 m3 . The gas is compressed until the volume is 1/8 of the original volume. Calculate the final pressure and temperature. ^^ I'm having problems following this...
  3. 1

    Can a 2MeV photon produce a proton-antiproton pair?

    Ok great, thanks for that. I have another question if you don't mind? (i'm self studying physics so i might have quite a few :( ) The question says: The rest energy of an electron is 0.511 MeV; a positron collides with an energy of 0.158 MeV of energy, calculate the total energy of the...
  4. 1

    Can a 2MeV photon produce a proton-antiproton pair?

    Hi all - just a bit confused about an answer in the AQA AS Physics textbook: 'Explain why a photon of energy 2MeV could produce an electron - positron pair, but not a proton - antiproton pair' and the ANSWER is: 'The rest energy of an electron and a positron is less than 2MeV but...