What was the measured sound level at the hotel security desk farthest from the appliance in the scenario?

What was the measured sound level at the hotel security desk farthest from the appliance in the scenario?

• A. 43 dBA
• B. 37 dBA
• C. 40 dBA
• D. 45 dBA

Answer: (A)

Sound level decreases with distance from a sound source because the energy spreads out and is absorbed by the environment. The security desk that is farthest from the appliance experiences the most attenuation, so the measured level at that desk should be lower than readings closer to the source. Among the given numbers, the value that best matches the expected amount of attenuation for the farthest desk is 43 dBA. The higher numbers would imply less attenuation than you'd expect at that distance, while the lower numbers would imply more attenuation than typically observed for the farthest point in such a room. Therefore, 43 dBA is the most consistent with the farthest desk scenario.

Sound level decreases with distance from a sound source because the energy spreads out and is absorbed by the environment. The security desk that is farthest from the appliance experiences the most attenuation, so the measured level at that desk should be lower than readings closer to the source.

Among the given numbers, the value that best matches the expected amount of attenuation for the farthest desk is 43 dBA. The higher numbers would imply less attenuation than you'd expect at that distance, while the lower numbers would imply more attenuation than typically observed for the farthest point in such a room. Therefore, 43 dBA is the most consistent with the farthest desk scenario.