   Chapter 11, Problem 79CP ### University Physics Volume 3

17th Edition
William Moebs + 1 other
ISBN: 9781938168185

#### Solutions ### University Physics Volume 3

17th Edition
William Moebs + 1 other
ISBN: 9781938168185
Textbook Problem

# 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 1010 GeV converts its energy into panicles with masses averaging 200MeV/c2. (a) How many particles are created? (b) If the particles rain down on a 1.00-km2 area, how many particles are there per square meter?

To determine

(a)

The number of particles created and particles there for square meter.

Explanation

Given:

Ec =1010GeV

Er =200 MeV/ c2

Formula used:

Number of particle is calculated by

n=EcEr

Calculation:

As the energy changes into particles with masses averaging 200 MeV/c2, so the number of particles created will be

n=Ec</

To determine

(b)

The number of particles for square meter.

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