The Intensity Level of a Power Mower at a Distance

question 22

Multiple Choice

The intensity level of a power mower at a distance of 1.0 m is 100 dB. You wake up one morning to find that four of your neighbors are mowing their lawn 20 m from your open bedroom window. What is the intensity level in your bedroom?

• A) 80 dB
• B) 104 dB
• C) 400 dB
• D) 50 dB
• E) 40 dB

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