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An Ω^- particle has rest energy 1672 MeV and mean lifetime 8.2x10^-11 s. It is created and decays in a particle track detector and leaves a track 24 mm long. What is the total energy of the Ω^- particle?

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An particle has rest energy 1672 MeV and mean lifetime 8.2 × 10-¹¹ s. It is created and decays in a particle track detector and leaves a track 22-mm long. What is the total energy of the particle?