A subatomic particle moving at a speed of 5.5*10^7 m/s has a life of 3.1*10^-5 seconds. what is the lifetime of this aprticle when it is at rest? ...does anyone know what formula i would use to solve this one?(adsbygoogle = window.adsbygoogle || []).push({});

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# Homework Help: SuM heLp wUd b appRecIatEd

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