The Decibel Level of a Jackhammer Is 130 DB Relative

question 52

Multiple Choice

The decibel level of a jackhammer is 130 dB relative to the threshold of hearing. Determine the decibel level if three jackhammers operate side by side.

• A)65 dB
• B)130 dB
• C)133 dB
• D)148 dB
• E)260 dB

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Definitions:

Oropharynx

The oropharynx is the middle part of the throat that lies behind the mouth, serving as a pathway for food moving from the mouth to the esophagus and air moving to the larynx.

Nasopharynx

The upper part of the throat that lies behind the nose and above the soft palate, serving as a passageway for air from the nose to the throat and lungs.

Laryngopharynx

The region of the throat that connects the oropharynx above with the trachea and esophagus below, facilitating the passage of food and air.

Catabolism

The breakdown of complex molecules in living organisms to form simpler ones, often releasing energy.