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Question: 

An unstable particle produced in an accelerator experiment travels at constant velocity, covering 1.00 m in 3.40 ns in the lab frame before changing (“decaying”) into other particles. In the rest frame of the particle, determine

  1. how long it lived before decaying,
  2. how far it moved before decaying.

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. $6.7 \times 10^{-10} \textrm{ s}$
  2. $0.20 \textrm{ m}$

Giancoli 7th Edition, Chapter 26, Problem 14

(3:11)

Chapter 26, Problem 14 is solved.

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