The mean lifetime of stationary muons is measured to be 2.2000 jLs. The mean lifetime of high-speed muons in a burst of cosmic rays observed from...

The mean lifetime of stationary muons is measured to be 2.2000

jLs. The mean lifetime of high-speed muons in a burst of cosmic rays

observed from Earth is measured to be 16.000 jLS. To five significant

figures, what is the speed parameter (3 of these cosmic-ray muons

relative to Earth?