Asked by Talha

a cosmic ray (a muon) enters earth's atmosphere 60 km above earth's surface. It reaches a detector on the ground after travelling 400microseconds in the atmosphere, as measured by experimenters on the ground. How long does the journey take according to the muon?

Answers

Answered by henry2,
d = V*T = 60,000 m.
4*10^-4 * T = 6*10^4,
T = ---Seconds.
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