If a Sound of Intensity I = 1

question 66

Multiple Choice

If a sound of intensity I = 1.0  10^-6 W/m² falls on a detector of area A = 7.0  10^-5 m² about the size of your eardrum) , how much power is received by the detector?

• A) 6.2  10^-14 W
• B) 1.0  10^-6 W
• C) 7.0  10^-11 W
• D) 1.4  10^-2 W
• E) 70 W

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Definitions:

Molecular Biology

A branch of biology that focuses on the structure and function of the molecules that make up cells, particularly DNA, RNA, and proteins.

Microbiology

The branch of science concerned with microorganisms and their effects on other living organisms.

Surface Anatomy

The study of the external features of the body and their relationship to deeper structures, as visible to the naked eye without dissection.

Organelle

Specialized structures within a cell, each performing specific functions necessary for the cell's life, such as mitochondria, the Golgi apparatus, and the nucleus.