si CAUTION O dB does not mean zero intensity N В in TABLE 16-2 in Intensity of Various Sounds 20 Sound Level Intensity (dB) (W/m2 Source of the Sound T Jet plane at 30 m Threshold of pain 140 100 120 1 Loud rock concert 120 1 1 x 102 Siren at 30 m 100 1 x 103 Truck traffic 90 Busy street traffic Noisy restaurant 1 x 10 1 x 10 S 3 x 10 1 x 10-8 1 x 10- 70 Talk, at 50 cm 65 Quiet radio 40 Whisper 30 1 x 1011 Threshold of hearing 01 x 1012 Rustle of leaves 10

Q: The human ear can detect a minimum intensity of Io = 10-12 W/m2, which has a sound intensity of 0…

A:

Q: hè wavé cárries a frequency A sound level 20 m from a loudspeaker is 65 dB, at air temperature of…

A: The sound level from a source is inversely proportional to the distance of propagation. The level is…

Q: 19) What is the intensity level in decibels of a sound with intensity 10-3 W/m2? The threshold of…

A: Intensity of sound (I) = 10-3 Wm2Threshold of human hearing (Io) = 10-12 Wm2

Q: Given that the threshold of hearing is 10-16 W/cm2, the intensity of a sound wave with a power of…

A: Intensity of sound wave (I) = 10-12 Wcm2Threshold of hearing (Io) = 10-16 Wcm2

Q: True or False: The intensity of a 75 dB sound is calculated: e^7.5x10^−12 W/m2

A:

Q: The sound level at a distance d=26 m from a loudspeaker is 70 dB. What is the power (in Watt) at…

A:

Q: Sound from source 2 has a sound intensity level that is 15.0 dB higher than sound from source 1. By…

A:

Q: The sound level at a distance d=D44 m from a loudspeaker is 70 dB. What is the power (in Watt) at…

A:

Q: QUESTION 23 A string with two fixed ends has a mass of 2.0 g and a length of 40 cm. If the string is…

A:

Q: What fundamental frequency would you expect from blowing across the top of an empty soda bottle that…

A: OSCILLATION AND WAVES

Q: Intensity of sound = (10] ^(-6) W/m^2, measured the intensity level? if the sound inaudible or…

A:

Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…

A:

Q: Suppose a sound has intensity I that is 100,000 times greater than the intensity of the quietest…

A:

Q: The sound level at a distance d=21 m from a loudspeaker is 70 dB. What is the power (in Watt) at…

A: Given: Sound intensity level: Distance: Reference intensity:

Q: A 52-dB sound wave strikes an eardrum whose area is 5.0 x 10 5 m2. The intensity of the reference…

A: Givensound wave ,B=52 dBA=5×10-5 m2Reference intensity ,I0=1×10-12 W/m21 yr=3.156×107 s

Q: A sound intensity level is increased from 30 dB to 50 dB, by what factor does the sound intensity…

A:

Q: Doubling the power output from a sound source emitting a single frequency will result i what…

A: The intensity of the sound is high then the sound will also be louder. The sound intensity level…

Q: A source emits sound uniformly in all directions. There are no reflections of the sound. At a…

A: The distance between the point and the source,

Q: You like to listen to music at a sound intensity of 3.3×10−53.3×10−5 W/m2. What is the intensity…

A: Given: The intensity of the sound is 3.3x10-5 W/m2. The intensity of sound for threshold hearing is…

Q: Hearing damage may occur when a person is exposed to a sound intensity level of 90.0 dB (relative to…

A:

Q: A-2 The faintest sound detectable by the human ear has an intensity of about 1x101 W/m“. a) Find the…

A:

Q: > A point source emits sound isotropically. At a distance of 3.00 m from the source, the sound level…

A:

Q: The faintest sound the human ear can detect at frequency 1kHz corresponds to an intensity of about…

A:

Q: > The intensity of sound wave A is 800 times that of sound wave B at a fixed point from both…

A: Sound waves are longitudinal waves. The longitudinal waves are the waves that propagate in a…

Q: 21) What is the intensity level in decibels of a sound with intensity 10-4 W/m2? The threshold of…

A:

Q: Calculate the sound intensity level in decibels for a sound wave traveling in air at 0ºC and having…

A:

Q: At a distance of 2.00 m from a point source of sound, the intensity level is 80.0 dB. What will be…

A:

Q: Problem 21: A single dog barks at a sound intensity level of ß= 84 dB. andomized Variables = 84 dB…

A:

Q: A sound wave in air has pressure amplitude equal to 4×10^-3 n/m^2. Calculate  the displacement…

A: Given, Pressure amplitude, P= 4×10-3 N/m2, and frequency, f=10 kHz=10000 Hz.

Q: The sound level at a distance d=46 m from a loudspeaker is 70 dB. What is the power (in Watt) at…

A:

Q: A pipe with one closed end vibrates with standing waves at the second harmonic. It produces a C-…

A: Given  Frequency in the pipe (f) = 264 Hz Speed of sound in air (V) = 340 m/s Length of the pipe (L)…

Q: Chapter12-009 Suppose that a sound source is emitting waves uniformly in all directions. If you move…

A:

Q: Suppose that a public address system emits sound uniformly in all directions and that there are no…

A: The formula for the intensity in terms of power and surface area is:

Q: What is the dynamic range of human ear? a. threshold of hearing (W/m2 ) b. threshold of pain (W/m2 )…

A: (a) Threshold of hearing is 0 dB that is 10-12 W/m2.

Q: The sound level at a distance d=34 m from a loudspeaker is 70 dB. What is the power (in Watt) at…

A:

Q: -A car horn outdoors produces a sound intensity level L1 of 90 dB at 10 ft. away.   1. Find the…

A: Given: The sound intensity level is 90 dB at a distance of 10 ft from the source.

Q: Calculate the sound level at a distance of 4.50 m when the intensity of the sound is 1.00x 10 W/m2…

A: The expression for the sound level intensity at a distance 4.5 m is,

Q: What is the maximum frequency of sound, which can be heard by human? Оа. 20000 Hz O b. 2 KHz Oc 20…

A: Humans can hear sound frequencies  from about 20 Hz to 20 kHz. So the maximum frequency of sound can…

Q: A glass window is installed in the window space and the intensity level of the sound entering…

A: Given, D1 = 72 dB  D2 = 47 dB  As we know, D1 = 10*log(I1/I0) -----(1) And, I1 = I0*10^(D1/10) D2 =…

Q: Sound level B in decibels is defined as B = 10 log () = 1 x 10-12 W/m². The decibel where Io scale…

A: The sound level of intensity is related to the sound decibel in the following form:…

Q: A good hearing aid will uniformly increase the sound intensity of all audible frequencies of sound…

A: Given data The increase in the sound intensity is ∆β=31.7 dB The intensity of the picked-up sound…

Q: (II) (a) Estimate the power output of sound from a person speaking in normal conversation. Use Table…

A: (a)   Write the expression for the intensity of the sound, substitute the required values, and…

Q: Find the difference in loudness between an average office with an intensity of 1.26 x 10-7 W/m2 and…

A:

Q: Question No. 18 If the density in a region through which a sound wave is passing is maximum at an…

A:

Q: A speaker source of the sound level of 10 dB. What is the intensity of N = 222 sound sources of the…

A:

Q: A sound source emits 20.0 W of acoustical power spread equally in all directions. The threshold of…

A:

Shock Waves

Shock waves are common in continuum mechanics, and their dominance is attributable to the fact that they are stronger (or even less) compressible. Substantial perturbations propagated as sudden dynamic changes of a compressible medium supersonically. Shock waves are all around us in our daily lives. Lightning, earthquakes, volcanic eruptions, and meteorite impact all produce them in nature. Even the earth, which is protected by its magnetic field, generates a shock wave as in solar wind that travels around 20 Earth radiuses. These shock waves might be either constant, linked to the body, or unsteady, i.e., moving around with time. All of the shocks mentioned above can be damaging, so precautions must be taken to reduce their impact.