Question: A photon can be absorbed by a system that can have internal energy. Assume that a 15 MeV photon is absorbed by a carbon nucleus

A photon can be absorbed by a system that can have internal energy. Assume that a 15 MeV photon is absorbed by a carbon nucleus initially at rest. The recoil momentum of the carbon nucleus must be 15 MeV/c.

(a) Calculate the kinetic energy of the carbon nucleus. What is the internal energy of the nucleus?

(b) The carbon nucleus comes to rest and then loses its internal energy by emitting a photon. What is the energy of the photon?

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