Question: A neutral pion 0 (rest energy = 135.0 MeV) produced in a high-energy particle experiment moves at a speed of 0.780 c. After a very

A neutral pion π0 (rest energy = 135.0 MeV) produced in a high-energy particle experiment moves at a speed of 0.780 c. After a very short time, it decays into two g-ray photons. One of the g-ray photons has an energy of 192 MeV. What is the energy (in MeV) of the second g-ray photon? Take relativistic effects into account.

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