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A cosmic ray muon with mass mμ = 1.88 ✕ 10−28 kg impacting the Earth's atmosphere...

A cosmic ray muon with mass

mμ = 1.88 ✕ 10−28 kg

impacting the Earth's atmosphere slows down in proportion to the amount of matter it passes through. One such particle, initially traveling at 2.42 ✕ 106 m/s in a straight line, decreases in speed to 1.52 ✕ 106 m/s over a distance of 1.30 km.

(a) What is the magnitude of the force experienced by the muon?
N

(b) How does this force compare to the weight of the muon?

|F|
Fg

=

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