Cosmic rays colliding with Earth's upper atmosphere produce highenergy particles called muons. An observer detects that a muon has been created, and observes that it reaches the surface of the Earth 20.0 x 10-6 seconds later. The observer also determines that the muon was moving at 2.97 x 108 m/s. In the muon's reference frame, how much time passed between its creation and reaching the surface of the Earth

Cosmic rays colliding with Earth's upper atmosphere produce highenergy particles called muons. An observer detects that a muon has been created, and observes that it reaches the surface of the Earth 20.0 x 10-6 seconds later. The observer also determines that the muon was moving at 2.97 x 108 m/s. In the muon's reference frame, how much time passed between its creation and reaching the surface of the Earth

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