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The Loudness of a Sound (Measured in Decibels DB)

Question 201

Multiple Choice

The loudness The loudness of a sound (measured in decibels dB) is inversely proportional to the square of the distance from the source of the sound. Suppose a person who is 4 ft from a hair dryer experiences a sound level of 60 dB. How loud is the hair dryer for a person 7 ft away? Round to the nearest tenth. A) 0.1 dB B) 19.6 dB C) 1.2 dB D) 70.0 dB E) 960.0 dB of a sound (measured in decibels dB) is inversely proportional to the square of the distance The loudness of a sound (measured in decibels dB) is inversely proportional to the square of the distance from the source of the sound. Suppose a person who is 4 ft from a hair dryer experiences a sound level of 60 dB. How loud is the hair dryer for a person 7 ft away? Round to the nearest tenth. A) 0.1 dB B) 19.6 dB C) 1.2 dB D) 70.0 dB E) 960.0 dB from the source of the sound. Suppose a person who is 4 ft from a hair dryer experiences a sound level of 60 dB. How loud is the hair dryer for a person 7 ft away? Round to the nearest tenth.


A) 0.1 dB
B) 19.6 dB
C) 1.2 dB
D) 70.0 dB
E) 960.0 dB

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