The Intensity of Gamma Rays Passing Through a Material as a Function

question 19

Multiple Choice

The intensity of gamma rays passing through a material as a function of thickness, x is given by where n is the number of atoms per cm³ and $\sigma$ is the absorption cross section. If the intensity of gamma rays of a particular energy is reduced by half when they passed through 1 cm of lead, what is the absorption cross section for the gamma rays? The density of lead is 11.3 g/cm³ and its molar mass is 207 g.

• A) 3.5 * 10^{- 22} cm²
• B) 6.8 * 10 ²² cm²
• C) 4.6 * 10 ²³ cm²
• D) 2.1 * 10 ²³ cm²
• E) 8.4 * 10 ²⁴ cm²

Describe the phenomenon of occupational burnout and its symptoms.

Understand the dynamics of work-family conflicts and how they impact individuals.

Identify factors that contribute to workaholism and strategies for prevention.

Recognize the effects of job stress and strategies for mitigation.

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Definitions:

Covalent Compounds

Chemical compounds where atoms are bonded by sharing pairs of electrons, characterized by the formation of molecules.

Resonance Forms

Alternative ways of drawing the structure of a molecule to represent delocalized electrons within the molecule, emphasizing the molecule's dynamic nature.

Rapidly Moving

Describes a process or particle exhibiting high velocity, often used in the context of dynamic chemical or physical systems.

Resonance Structures

Representations of a molecule showing different electron distributions, but the actual molecule is a hybrid of these.