Sound Level: the Sound Level at 1

question 87

Multiple Choice

Sound level: The sound level at 1.0 m from a certain talking person talking is 60 dB. You are surrounded by five such people, all 1.0 m from you and all talking equally loud at the same time. The threshold of hearing is 1.0 × 10^-12 W/m². What sound level are you being exposed to? You can neglect any absorption, reflection, or interference of the sound. The threshold of hearing is 1.0 × 10^-12 W/m².

• A) 300 dB
• B) 60 dB
• C) 74 dB
• D) 67 dB
• E) 81 dB

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Definitions:

Experimental Research

A research method involving the manipulation of variables to determine cause-and-effect relationships.

Survey

A research method that involves collecting data from a sample of individuals through their responses to questions, aimed at gathering information about attitudes, behaviors, or characteristics.

Correlational Research

A type of non-experimental research method in which a researcher measures two variables, understands and assesses the statistical relationship between them without any causal assumption.

Independent Variables

Factors in an experiment that are deliberately altered to test their impact on the variables being measured.