Sound Level: a Sound Source Emits 20

question 68

Multiple Choice

Sound level: A sound source emits 20.0 W of acoustical power spread equally in all directions. The threshold of hearing is 1.0 × 10^-12 W/m². What is the sound intensity level 30.0 m from the source?

• A) 92.5 dB
• B) 81.5 dB
• C) 1.77 × 10^-3 dB
• D) 1.77 × 10^-3 W
• E) -27.5 dB

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Definitions:

Cardiovascular Problems

Health issues related to the heart and blood vessels, including heart disease, hypertension, and stroke.

Atypical Antipsychotic

A class of medication primarily used to treat psychiatric conditions, with fewer side effects compared to older antipsychotic drugs.

Traditional Antipsychotic

Medications used primarily to treat schizophrenia and related psychotic disorders by blocking dopamine receptors in the brain.

Side Effects

Unintended and often adverse effects that accompany the intended effects of a medication or treatment.