Question 2 of 13 < - 71 E : View Policies Current Attempt in Progress An unstable high-energy particle enters a detector

[answerhappygod]

Question 2 Of 13 71 E View Policies Current Attempt In Progress An Unstable High Energy Particle Enters A Detector 1 (68.01 KiB) Viewed 29 times

Question 2 of 13 < - 71 E : View Policies Current Attempt in Progress An unstable high-energy particle enters a detector and leaves a track 0.855 mm long before it decays. Its speed relative to the detector was 0.927c. What is its proper lifetime in seconds? That is, how long would the particle have lasted before decay had it been at rest with respect to the detector? Number Units