The Source of a Sonic Boom

question 22

Multiple Choice

The source of a sonic boom

• A)must be a sound emitter.
• B)may or may not be a sound emitter.
• C)is not a sound emitter.
• D)none of the above

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Definitions:

Anxious Distress

A specifier used in diagnostic criteria to indicate the presence of anxiety symptoms alongside another condition.

Persistent Depressive Disorder

A chronic form of depression where a person experiences a depressed mood for most of the day, for more days than not, for at least two years.

Major Depressive Disorder

Disorder involving a sad mood or anhedonia plus four or more of the following symptoms: weight loss or a decrease in appetite, insomnia or hypersomnia, psychomotor agitation or retardation, fatigue, feelings of worthlessness or severe guilt, trouble concentrating, and suicidal ideation; these symptoms must be present for at least 2 weeks and must produce marked impairments in normal functioning.

Hallucination

A perception in the absence of external stimulus that has qualities of real perception, often seen in psychiatric conditions like schizophrenia.