The average lifetime of muons at rest is 220 mus a, Ask an Expert

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The average lifetime of muons at rest is 2.20 μs. A laboratory measurement on muons traveling in a beam emerging from a particle accelerator yields an average muon lifetime of 19.932 μs.

a) What is the speed of the muons in the laboratory? ((I know the answer to this is 2.98e⁸ m/s))

b) What is their kinetic energy?

c) What is their momentum? (MeV/c - Do not enter a unit) The mass of a muon is 207 times that of an electron.

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