the maximum distance at which

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A person speaking normally produces a sound of intensity 40 dB at a distance of 1 m. If the threshold intensity for reasonable audibility is 20 dB, the maximum distance at which
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Nov
A person speaking normally produces a sound of intensity 40 dB at a distance of 1 m. If the threshold intensity for reasonable audibility is 20 dB, the maximum distance at which A person speaking normally produces a sound of intensity 40 dB at a distance of 1 m. If the threshold intensity for reasonable [...]
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