(a) What is the intensity in watts per meter squared of a just barely audible 200-Hz sound? (b) What is the intensity in watts per meter squared of a barely audible 4000-Hz sound?

Q: An isotropically radiating point source of sound has a power output of 903 W. What is the sound…

A:

Q: The sound generated by a loudspeaker located in a certain avenue, develops a power of 1mW; If this…

A: The solution is given below

Q: A typical sound level for a buzzing mosquito is 35 dB, and that of a vacuum cleaner is approximately…

A: Given, sound level for a buzzing mosquito=35dB sound level for vacuum cleaner=65dB

Q: Calculate the wavelengths of sounds at the extremes of audible range, 20 and 20000Hz, in 30.0o C…

A:

Q: At a distance of 5 m next to the road, the sound level produced by traffic is measured to be 85 dB.…

A:

Q: When one person was talking in a small room, the sound intensity level is 57 dB everywhere within…

A: Intensity of one person = I Intensity level = 10*log(I/Io) = 57 Io = threshold intensity = 10^-12…

Q: The wavelength of sound emitted by a source is 1.2m. Calculate the frequency of this sound if its…

A:

Q: How far must one stand from a 4 mW point sound source if the intensity at that location is at the…

A: Given, Power = 4mW

Q: When one person was talking in a small room, the sound intensity level is 49 dB everywhere within…

A:

Q: The smallest change in sound level that can be detected by a person with normal hearing is 1 dB.…

A:

Q: What is the sound level of a sound whose intensity is 9.5×10-6 W/m2?

A: The intensity of the faintest sound that is audible is called the Threshold of Hearing. This has an…

Q: What is the decibel level of a sound that is three times as intense as a 83.2 dB sound? (b) What is…

A:

Q: If the sound level of one barking dog is 70 dB, estimate the sound level of 76 dogs barking…

A: Given: Sound level of one dog is 70 dB

Q: 4. (a) What is the sound intensity for a sound source with a sound intensity level (IL) of 120 dB?…

A: Part A. Intensity level = Say intensity of sound is I. The relation between the intensity level and…

Q: (a) What are the loudnesses in phons of sounds having frequencies of 200, 1000, 5000, and 10,000 Hz,…

A: (a) From graph, it can see that the loudness in the phons of sound having frequencies of 200, 1000,…

Q: A subway train has a sound intensity level of 86 dB, and a rock band has a sound intensity level of…

A:

Q: If a sound intensity level of 0 dB at 1000 Hz corresponds to a maximum gauge pressure (sound…

A:

Q: I The loudness, L, in decibels(dB), is given by the formula L = 10 • log where l = 10-1² W/m². The…

A:

Q: By how many decibels does the intensity level of a sound increase when you increase the the…

A: increase in intensity of sound = 2.97 times I' = 2.97 I

Q: The decibel level 3 m from a source of sound is 105 dB? What is the decibel level 9 m from the…

A:

Q: An organ pipe (closed at one end) is 0.5 m long. (a) What is the fundamental frequency of the pipe…

A:

Q: The intensity of a sound is 800W / (m ^ 2) if the intesity level of sound decreased by 20 decibels,…

A: Given I=800 w/m2 Decrease in loudness=20 dB β=10dB logII0 So β1-β2=10dB logI1I2

Q: (a) Find the intensity in watts per meter squared of a 60.0-Hz sound having a loudness of 60 phons.…

A: (a) The loudness (β1) level corresponding to 60 Hz frequency and 60 phons is approx 75 dB (from the…

Q: 10 m from a speaker sound intensity level 60 dB.  (a) What is the power of the speaker? (b) What is…

A:

Q: The sound intensity level inside a typical modern airliner inflight is 66.0 dB. The air in the cabin…

A: Sound intensity level = 66.0dBAir in the cabin (density)=0.920 kg/m3speed of sound = 344…

Q: A sound wave is travelling in air has a frequency of 730 Hz, What is the wavelength of the wave in…

A: Given Frequency = 730 Hz Temperature = 350F = 1.660C

Q: (a) By what factor must the sound intensity be increased toraise the sound intensity level by 13.0…

A: Given data: The change in sound intensity level is ∆β=13.0 dB. Part (a) The expression for the…

Q: The sound intensity level of two speakers are 71.4 dB and 79.2 dB, respectively. Find the ratio of…

A: sound intensity is defined as the power carried by the sound waves per unit cross-sectional area.…

Q: The sound intensity level of 9 m from a large power saw is 89 dB. At what distance(in meters) will…

A: (given) Sound intensity level at distance (r1)= 9 m Power saw β1 = 89 dB More tolerable intensity…

Q: An average factory has a sound intensity level of 80 dB, and a boiler shop has a sound intensity…

A: