An electron and a positron, each moving at2.0 X 105 m/s,
Chapter 37, Problem 37.38(choose chapter or problem)
An electron and a positron, each moving at2.0 X 105 m/s, collide head on, disappear, and produce twophotons moving in opposite directions, each with thesame energy and momentum. Determine the energy andmomentum of each photon.
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