The level of sound is attenuated by 30 dB by a sound absorber. The intensity of sound will decrease by a factor of
When a person wears a hearing aid, the sound intensity level increases by 30 dB. The sound intensity increases by
At a distance of 5.0 m from a point sound source, the sound intensity level is 110 dB. At what distance is the intensity level 95 dB?
Two sounds differ in sound level by 3.00 dB. What is the ratio of the greater intensity to the smaller intensity?
A certain sound source is increased in sound level by 40.0 dB. By what multiple is (a) its intensity increased and (b) its pressure amplitude increased?
Many veteran rockers suffer from acute hearing damage because of the high sound levels they endured for years. Many rockers now wear special earplugs to protect their hearing during performances . If an earplug decreases the sound level of the sound waves by 20 dB, what is the ratio of the final intensity I_f of the waves to their initial intensity I_i ?
For a sound source of intensity IW//m^(2) , corresponding sound level is B_0 decibel If the intensity is increased to 4I , new sound level becomes.
If the intensity of sound increased by a factor of 20 then the sound level increases in decibels by the
(a) By what factor must the sound intensity be increased the sound intensity level by 13.0 dB ? (b) Explain why you do not need to know the original sound intersity ?
