The Level of a Sound in Decibels Is Calculated Using $D = 10 \cdot \log \left( I \times 10 ^ { 12 } \right)$

question 89

Multiple Choice

The level of a sound in decibels is calculated using the formula $D = 10 \cdot \log \left( I \times 10 ^ { 12 } \right)$ where I is the intensity of the sound waves in watts per square meter. The softest sound that a human can hear has an intensity of 10-12 watts per square meter. How many decibels is that?

• A) 10
• B) 24
• C) -12
• D) 0

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Definitions:

Lewis Structures

Illustrations that depict how atoms within a molecule bond together and also visualize any unpaired electrons that might be present.

Covalent

Describing a type of chemical bond formed by the sharing of electrons between atoms.

Ionic

Relating to ions or the chemical bonds formed through the electrical attraction between oppositely charged ions.

Bonding

The attractive force that holds atoms or ions together in a molecule or compound, forming a stable substance.