1. Muons are unstable subatomic particles with an average lifetime of 2.2 us that decay intoelectrons and two types of neutrinos. They are produced when cosmic ray protons hit atomicnuclei in the Earth's atmosphere 10. km above sea level.a. At 0.999 c, what is the greatest distance (rest frame) a muon could travel in its averagelifetime?b. Thus, the problem: muons could never reach the ground! However, the 2.2 µs average lifetimeis from the muon's point of view. To an observer on the ground, what is the average lifetime ofa muon? How far could a muon travel in this time? Will the muon reach the ground, from thepoint of view of an observer on the ground?c. To the muon, how far is the 10. km distance to the ground? In its average lifetime and itsspeed of 0.999 c, will it be able to make it to the ground?

Given that: - Average lifetime of a muon: 2.2 μs - Muon's speed: 0.999c (0.999 times the speed of…

Answered: 1. Muons are unstable subatomic…

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