Fast-moving train passing by when sitting in a car about (20 mathrm{ft}) from the tracks with windows

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Fast-moving train passing by when sitting in a car about \(20 \mathrm{ft}\) from the tracks with windows down: \(40 \mathrm{~dB}, 60 \mathrm{~dB}\), \(80 \mathrm{~dB}\)

Select the most representative decibel level for each sound.

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