Two People Are Talking at a Distance of 3

question 43

Multiple Choice

Two people are talking at a distance of 3.0 m from where you are and you measure the sound intensity as 1.1 × 10^-7 W/m². Another student is 4.0 m away from the talkers. What sound intensity does the other student measure? Assume that the sound spreads out uniformly and undergoes no significant reflections or absorption.

• A) 6.2 × 10-8 W/m²
• B) 1.5 × 10-7 W/m²
• C) 8.3 × 10-8 W/m²
• D) 7.8 × 10-7 W/m²
• E) 2.5 × 10-8 W/m²

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Definitions:

Prelinguistic Vocalization

Sounds made by infants before they acquire language, including cooing and babbling, which are important for the development of communication skills.

Negative Instances

Examples or situations that do not conform to a particular rule or generalization, often used in learning and reasoning.

Hypermorphs

Genetic mutations that result in increased gene expression or activity compared to the wild-type allele.

Hypomorphs

Mutated genes that produce a less active product than the normal gene.