Part A
The positive muon ($\mu^{+}$), an unstable particle, lives
on average 2.20x10$^{-6}$ s (measured in its own
frame of reference) before decaying.
If such a particle is moving, with respect to the laboratory, with a speed of 0.940 c, what average lifetime is
measured in the laboratory?
Express your answer in seconds.
$t_{av}$ =
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Part B
What average distance, measured in the laboratory, does the particle move before decaying?
Express your answer in meters.
$L$ =
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