A Microphone of Surface Area 2

question 22

Multiple Choice

A microphone of surface area 2.0 cm² absorbs 1.1 mW of sound.What is the intensity of sound hitting the microphone?

• A)2.2 x 10^-5 W/m²
• B)0.55 W/m²
• C)2.2 W/m²
• D)2.8 W/m²
• E)5.5 W/m²

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Definitions:

Different Animals

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Continental Drift

The gradual movement of continents across the Earth's surface through geological time.

Fossils

Preserved remains, impressions, or traces of organisms from the past, typically found in sedimentary rock, that provide evidence of life in Earth's history.

Biogeography

The study of the past and present geographic distributions of organisms.