The Sound Level When One Student Is Talking During Lecture

question 38

Multiple Choice

The sound level when one student is talking during lecture is 40.0 dB.What would be the sound level if all 256 students talk at the same time during lecture? Assume each student talks equally loudly.

• A)42.4 dB
• B)64.1 dB
• C)65.6 dB
• D)296 dB

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Definitions:

Cervix

The entrance into the uterus.

Sterile Water

Water that has been purified and treated to remove all microbes and contaminants, often used for medical or laboratory procedures.

Sterile Saline

A salt solution prepared in a manner that prevents contamination by microorganisms and is used for medical purposes such as wound irrigation and intravenous drips.