An electron and a positron are moving toward each other and, Ask an Expert

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An electron and a positron are moving toward each other and each has speed 0.560c in the lab frame.

1. What is the wavelength of each photon? ____________ m

2. What is the kinetic energy of each particle? Ke-:________ J, Ke+__________ J

3. The e+ and e- meet head-on and annihilate. What is the energy of each photon that is produced? Eph: __________ J

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