?The intensity of cosmic ray radiation decreases rapidly with increasing energy, but

Chapter 11, Problem 79

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The intensity of cosmic ray radiation decreases rapidly with increasing energy, but there are occasionally extremely energetic cosmic rays that create a shower of radiation from all the particles they create by striking a nucleus in the atmosphere. Suppose a cosmic ray particle having an energy of \(10^{10} \mathrm{GeV}\) energy into particles with masses averaging \(200 \mathrm{MeV} / c^{2}\).

(a) How many particles are created? (b) If the particles rain down on a \(1.00-\mathrm{km}^{2}\) area, how many particles are there per square meter?

Text Transcription:

10^10 GeV

200 MeV/c^2

1.00 km^2

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