A Very Loud Train Whistle Has an Acoustic Power Output

question 39

Multiple Choice

A very loud train whistle has an acoustic power output of 100 W.If the sound energy spreads out spherically,what is the intensity level in dB at a distance of 89.0 meters from the train? (I₀ = 10−¹² W/m²)

• A)20.7 dB
• B)70.0 dB
• C)90.0 dB
• D)95.0 dB
• E)207 dB

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Definitions:

Groove Music

A digital music streaming service and app by Microsoft, offering music playback and organization, before being discontinued and replaced by other services.

Playlist

A collection of audio or video files played sequentially or in a specified order, commonly used in media players and streaming applications.

Playlist

A collection of audio or video files that can be played back on a media player in a sequence.

Audio File

A digital file format used to store sound recordings.