Whisper
Intensity Decibels
1 x 10-10 W/m2 20 db
Normal Conversat...
Physics, 07.05.2020 08:05 elpancho755
Whisper
Intensity Decibels
1 x 10-10 W/m2 20 db
Normal Conversation 1 x 10-6 W/m2 60 db
Vacuum Cleaner 1 x 104 W/m2 80 db
Front Row of Rock Concert 1 x 10 -1 W/m2 110 db
Jet Taking Off 1 x 10 2 W/m2 140 db
Based on the data, which statement BEST describes sound?
A)
The greater the intensity, the louder the sound.
There is no relationship between loudness and intensity.
The higher the decibel rating, the less intense the sound.
There is an inverse relationship between loudness and intensity.
Answers: 1
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Answers: 1
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Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec
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An electromagnetic wave with frequency 65.0 hz travels in aninsulating magnetic material that has dielectric constant 3.64 andrelative permeability 5.18 at this frequency. the electric fieldhas amplitude 7.20 \times 10^{ - 3} {\rm v}/{\rm m}. a. what is the speed of propagation of the wave? b.what is the wavelength of the wave? c.what is the amplitude of the magnetic field? d.what is the intensity of the wave?
Answers: 3
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