Concept explainers
To choose: the correct option.
Answer to Problem 3STP
The correct option is (B).
Explanation of Solution
Introduction:
The loudness of different objects are given below in the table:
Sound | Loudness (dB) |
Jet taking off | 150 |
Pain threshold | 120 |
Chain saw | 115 |
Power mower | 110 |
Vacuum cleaner | 75 |
Average home | 50 |
Purring cat | 25 |
The loudness of sound is determined by the amount of intensity in the sound waves. The unit of intensity is decibel (dB). As the decibel level increases, the intensity increases and the sound becomes louder. In the above table, the decibel is higher in chain saw among power mower, vacuum cleaner and purring cat.
Conclusion:
Hence, loudest among the options is chain saw.
Chapter 10 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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