ch37-p056 - 56. (a) The proper lifetime t0 is 2.20 s, and...

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m µ c 2 = 207 m e c 2 = 105.8 MeV, Eq. 37-52 yields () 2 1 (105.8MeV)(3.136 1) 226MeV. Km c γ =− = = (c) We write m c = 105.8 MeV/ c and apply Eq. 37-41: pm vm c c c == = = γγ β µµ 3136 1058 0 9478 314 .. . b gb gb g MeV / MeV / which can also be expressed in SI units ( p = 1.7 × 10 –19 kg·m/s). 56. (a) The proper lifetime t 0 is 2.20 s, and the lifetime measured by clocks in the laboratory (through which the muon is moving at high speed) is
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