College Physics
College Physics
2nd Edition
ISBN: 9780134601823
Author: ETKINA, Eugenia, Planinšič, G. (gorazd), Van Heuvelen, Alan
Publisher: Pearson,
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Chapter 30, Problem 40GP

* An electron and a positron are traveling directly toward each other at a speed of 0.90c (90% of light speed) with respect to the lab in which the experiment is being performed. The electron and positron collide, annihilate, and produce a pair of photons. Determine the wavelength of each photon. If you think they will have the same wavelength, explain why.

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