Question: Review Conceptual Example 7 as background for this problem. An electron and its antiparticle annihilate each other, producing two -ray photons. The kinetic energies of

Review Conceptual Example 7 as background for this problem. An electron and its antiparticle annihilate each other, producing two γ-ray photons. The kinetic energies of the particles are negligible. Determine the magnitude of the momentum of each photon.

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