Two In-Phase Loudspeakers That Emit Sound with the Same Frequency

question 138

Multiple Choice

Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 8.00 m.A person is standing 12.0 m away from the wall,equidistant from the loudspeakers.When the person moves 3.00 m parallel to the wall,she experiences destructive interference for the second time.What is the frequency of the sound? The speed of sound in air is 343 m/s.

• A)278 Hz
• B)422 Hz
• C)452 Hz
• D)562 Hz
• E)694 Hz

Identify features and limitations of mental disorders under the law.

Understand the principles governing compulsory treatment and their implications.

Describe the diagnostic criteria leading to voluntary and involuntary admissions.

Explain the conditions under which civil commitment occurs.

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Definitions:

Hippocampus

A region of the brain associated with memory formation, organization, and the ability to navigate environments.

Long-Term Memories

A type of memory capable of storing information for extended periods of time, possibly indefinitely, including facts, experiences, and skills.

Plasticity

The ability of some brain regions to perform the functions of other damaged regions.

Environmental Toxins

Harmful substances found in the environment which can negatively impact health, including chemicals, pollutants, and certain natural compounds.