A Particle of Kinetic Energy E₀ Traveling in a Region

question 37

Multiple Choice

A particle of kinetic energy E₀ traveling in a region in which the potential energy is zero is then incident on a potential barrier of height U₀.What is the ratio of E₀/U₀ so that the reflection co-efficient is 25%? (Assume E₀ is much less than the rest mass energy of the particle.)

• A)4.0
• B)1.25
• C)1.125
• D)1.025
• E)0.75

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Definitions:

Parasympathetic Nervous

Part of the autonomic nervous system that conserves energy as it slows the heart rate, increases intestinal and gland activity, and relaxes sphincter muscles in the gastrointestinal tract.

Endocrine

Pertaining to the system of glands that release hormones directly into the bloodstream to regulate processes such as growth, metabolism, and mood.

Somatic

Pertaining to or affecting the body, especially as distinguished from the mind or the environment.

Autonomic

Relating to the part of the nervous system that controls involuntary bodily functions, such as heartbeat, digestion, and breathing.