An elementary particle of mass μ initially at rest in a frame S completely absorbs a photon that was traveling in the +x direction. After absorbing the photon, the mass of the particle becomes 2μ. (a) What was the energy of the incoming photon? (b) Why is that energy greater than μc2?
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An elementary particle of mass μ initially at rest in a frame S completely absorbs a photon that was traveling in the +x direction. After absorbing the photon, the mass of the particle becomes 2μ.
(a) What was the energy of the incoming photon?
(b) Why is that energy greater than μc2?
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