I need question 30 but it asked to refer back to question 29. Thanks! If the ele

Question

I need question 30 but it asked to refer back to question 29. Thanks!

If the electron and the positron both have a rest energy of 0 51 MeV. find the minimum energy a particle of light (a photon), . can have in the reaction Assume the center-of-mass frame. Electrons and positrons (see the previous problem) can be sent at each other as colliding beams so that, effectively, the collision takes place in the center-of-mass frame. Find the minimum energy each incident particle must have in this frame in order that the reaction

Explanation / Answer

29)

initial energy = m(e-) + m(e+) = 0.51 + 0.51 = 1.02 Mev

final energy = 2 * E()

>>>>> E() = 1.02/2 = 0.51 MeV

30)

M(p) - M(e) = 938.27 MeV - 0.51 MeV = 938 MeV

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