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According to special relativity, the energy and momentum of a particle are
E = mc2 /√{1-v2/c2} and [(p)vec] = m[(v)vec] /√{1-v2/c2}
Show that E2 - p2c2 is invariant. If v = 9.00E+7 m/s, and m = 265.0 MeV/c2, what is √{E2-p2c2}?
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