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

question 100

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. It is observed that the intensity of gamma rays of a particular energy is reduced by half when they passed through 1 cm of lead. What is the thickness of lead needed to reduce the intensity to a quarter?

• A) 1.0 cm
• B) 1.5 cm
• C) 2.0 cm
• D) 3.0 cm
• E) 4.0 cm

Identify the strategic importance of customer representation within a firm by salespeople.

Recognize the concept and importance of SPIN selling and adaptive selling in personal selling.

Appreciate the critical role of salespeople as links between the firm and customers.

Acknowledge the importance and steps of the personal-selling process, including prospecting and sales presentations.

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Definitions:

Observable Behavior

Measurable actions or responses in individuals that can be visually witnessed and recorded by others.

Inferiority

A psychological condition or feeling where an individual perceives themselves as lacking in ability, quality, or status compared to others.

Psychoanalysis

A therapeutic approach and theory of psychological disorders, pioneered by Sigmund Freud, that emphasizes unconscious conflicts and past experiences.

Neuropsychology

Area of psychology in which psychologists specialize in the research or clinical implications of brain–behavior relationships.