Unstable high-energy particle enters detector-leaves track

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Reference no: EM13663882

An unstable high-energy particle enters a detector and leaves a track 1.09 mm long before it decays. Its speed relative to the detector was 0.992c. What is its proper lifetime? That is, how long would the particle have lasted before decay had it been at rest by respect to the detector?

Reference no: EM13663882

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