The decibel level of a sound is 67.8 dB. What is the intensity of the sound in nW/m²? 1 nW = 10¹⁹ W Enter a number with 1 digit behind the decimal point.
Q: A loudspeaker has a circular opening with a radius of 0.1308 m. The electrical power needed to…
A: radius of circular opening = 0.1308 m Electrical power needed to operate the speaker = 37.4 W Sound…
Q: The decibel is defined as ten times the logarithm of power gain, expressed as power out over power…
A: Solution:-Given thatdB=10 logPoutPinwhere dB=dBSIL; when Pin=10-12 W/m2dBSIL=1131 W=1000 mW
Q: Problem 5. A typical adult ear has a surface area of 0.0021 m². The sound intensity during a normal…
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Q: A bat can detect small objects, such as an insect, whose size is approximately equal to one…
A: Given data The frequency is given as f = 9.01 x 104 Hz. The speed of the sound in the air is given…
Q: What is the sound level (in decibels) of a sound whose intensity is 7.5 x 108 w/m2? 6.7 dB 7.5 dB 80…
A: Given : sound intensity , I = 7.5 × 10-8 W/m2
Q: A sound wave has intensity I, measured in units W/m^2. Show how to convert this intensity, I, to dB.
A: Given:- A sound wave has an intensity I. The unit of intensity is W/m2. Find:- Show how to convert…
Q: The intensity at a certain location is 1.021 W/m2. What is the sound intensity level at this…
A: Intensity of sound at a certain location (I) = 1.021 Wm2
Q: What is the speed of sound (in m/s) in a medium where a 189 kHz frequency produces a 0.614 cm…
A:
Q: The decibel level of a sound is defined to be $100 (7) B= 10 log where I is the intensity of the…
A: A train horn with a decibel rating ofwith a radius of.We need to find the intensity of the train…
Q: The loudness of sound is measured in decibels in honor of Alexander Graham Bell, inventor of the…
A: Given: L = 20 log10121.3PP0 L is in decibels L is 115 dB
Q: A sound wave from a siren has an intensity of 118.7 W/m2 at a certain point, and a second sound wave…
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Q: According to the Guinness Book of Records, the anechoic chamber at Orfield Laboratories in…
A: Write the expression for the noise reading. Here, I represents the intensity of noise and I0…
Q: You hear a sound of (4.0x10^1) decibels. What is the intensity? Give your answer in microwatts/m2…
A: Given data: Intensity level (β) = 4.0 × 101 dB Threshold of hearing (I0) = 1.0×10-12 W/m2 1 μW =…
Q: L = 10 log (7) where I is the intensity of sound in watts per square metre 10-¹2 W/m². Determine the…
A: Given that:L=10 log (IIo)Io=10-12 W/m2L=100 dB
Q: For x rays with wavelength 0.0300 nm, the m = 1 intensitymaximum for a crystal occurs when the angle…
A: Angle at which maximum occur is, sinθ=mλDλ=h2mE First we find D using the given conditions.
Q: Given: The intensity level of a sound wave is 75 dB relative to 1µPa. Required: Determine the…
A: Intensity level of sound relative to 1 μPa (I1)=75 dB We need to find the intensity level relative…
Q: A point source emits sound isotropically. The sound intensity is 0.02 W/m² at a distance of 7 m from…
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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: same time
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Q: the sound intensity a certain distance from a sound source is 4.0x10^12 W/m^2. A change occurs in…
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Q: intensity of another sound
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Q: A sound has an intensity level of 118 dB. What is the physical sound intensity in watts/m2?
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Q: f a sound that has a level 3.00 dB lower than a 3.33 ✕ 10−9 W/m2 sound? (b)
A: Givenβ=3 dB
Q: (a) What is the intensity (in W/m³) of a sound that has a level 3.00 d8 lower than a 4.03 x 10-"…
A: The total amount of sound energy flowing per unit time per unit area perpendicular to the direction…
Q: The relationship between the number of decibles B and the intensity I in watts per square meteris…
A: Let original intensity = I new intensity = 100 I B = 10 log ( I * 1012)B1 = 10 log ( I * 1012)B2 =…
Q: mplified through a sound system the amplified sound has a sound intensity level that is 12.2 dB…
A: We have givenA sound system the amplified sound has a sound intensity level that is 12.2 dB greater…
Q: The level of sound D in decibels is defined as follows: D = 10 log (10 16 ) 10-16 where I is the…
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Q: Fifty metres from an alarm the sound level is 103 dB. To what sound intensity does this correspond…
A: Given, Loudness,
Q: A typical adult ear has a surface area of 1.36 × 10-3 m2. The sound intensity during a normal…
A: It is given that,
Q: A 38.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at…
A: The frequency of the sound wave is f=38.0 Hz The sound intensity level is L=60 dB The density of air…
Q: The intensity of a sound wave, as it strikes a circular ear drum, is 0.65 W/m2. The amount of energy…
A: Given; I = 0.65 W/m2E=6*10-6 Jt=1 sec
Q: a medical imaging system sends a soundwave through a piece of bone. the speed of sound through bone…
A: Given data: Speed (v) = 3500 m/s Time (t) = 275 μs Required: Thickness of the bone
Q: The sound intensity level of a device is 2.00×10−2 W/m2. Convert this sound intensity level to…
A: Intensity of the sound level is I = 2.00×10−2 W/m2
Q: A signal no. 1 storm is up in your area, and the weather sirens are turned on to give warning to the…
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Q: Q:A- Calculate the sound level in dB of a sound intensity 10-8 Wm-2
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Q: Two sound waves have intensities of 1 times 10 to the -5 W/m2 and 5 times 10 to the -4 W/m2. What is…
A: The formula to calculate the difference in sound intensity levels (dB) between two sound waves with…
Q: Problem 4. A point source emits sound waves uniformly in all directions. At distance 90.0 m from the…
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Q: What is the speed of sound in (m/s) in a medium where a 156 KHZ frequency produces a 3.282 cm…
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Q: A noise has an intensity of 2.4×10-8 W/m2. If the threshold of human hearing is I0 = 1.0×10-12 W/m2,…
A: Given data: Intensity (I) = 2.4 ×10-8 W/m2 Threshold hearing (I0) = 1.0×10-12 W/m2 Required: The…
Q: A source emits sound uniformly in all directions. There are no reflections of the sound. At a…
A: Given: Instensity(I) = 4.2×10-3 W/m2 Since the source emits sound in all directions it…
Q: The intensity level in decibels is defined as 10 log10(I/I0), where I0 is a reference intensity…
A: Given data: Intensity level in decibels dB = 10 log10(I/I0) Here I0 = 10-12 W/m2 The intensity of…
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