A Siren Emitting Sound of Frequency 1000 Hz Approaches a Stationary

question 106

Multiple Choice

A siren emitting sound of frequency 1000 Hz approaches a stationary observer at one-half the speed of sound.The observer hears a frequency of

• A)1000 Hz
• B)2000 Hz.
• C)500 Hz.
• D)1500 Hz.
• E)none of the above.

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Definitions:

Diagnostic

Pertaining to the identification of the nature or cause of a health problem through examination of the symptoms.

Psychological Disorders

Mental health conditions characterized by disturbances in thought, emotion, or behavior, leading to distress or impaired functioning.

DSM-IV-TR

The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision; a guide used by healthcare professionals to diagnose mental disorders.

American Psychiatric Association

A professional organization of psychiatrists aimed at advancing the understanding and treatment of mental disorders.