#2. You are walking down the street in a city where the sound of traffic is at 71.9 dB. Your friend is talking to you at 60.5 dB. What is the combined sound intensity level? Is the combined sound above the threshold of pain?
Q: A single dog barks at a sound intensity level of β = 88 dB. a. Another dog runs up beside the first…
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Q: 3) A herd of 7 screeching elephants makes a sound of 117 dB. a) What is the intensity produced by…
A: Number of elephants screeching, The intensity of sound in decibels,
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Q: double the intensity of sound wave in air while leaving the frequency unchanged. The pressure,…
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Q: 6.) Acoustics a.) By what factor is an 82.0 dB sound more intense than a 24.0 dB sound? What is the…
A: Sound level 1 SL1=82 dB=10 logI1I0Sound level 2 SL2=24 dB=10 logI2I0SL1-SL2=82dB-24dB=58…
Q: A window whose area is 1.5 m² open onto a street. Sound at an intensity level of 75 dB enters the…
A: Since you have asked multiple questions, here the first question is incomplete so we will solve the…
Q: One person shouting can produce a sound level of 85 dB from a distance of 10 m. Suppose there are…
A: Given: The sound level produce when a person shouts is 85 dB from a distance of 10 m. To determine:…
Q: 5. You live on a busy street, but as a music lover, you want to reduce the traffic noise. (a) If you…
A: (a) Given: The intensity level reduced is 30 dB.
Q: 13. Two identical machines are positioned the same distance from a worker. The intensity of sound…
A: 13. Given, The intensity of sound delivered by each machine at location of the worker is, I = 21μW…
Q: A person standing 1.25 m from a portable speaker hears its sound at an intensity of 4.70 x 10-³…
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Q: 6. The intensity levels of two people's speech are 63.0 dB and 64.5 dB, respectively. What is the…
A: The 'dB' unit is a logarithmic unit, therefore we can not simply directly add them. We need to use a…
Q: 2. A person standing a certain distance from an airplane with four equally noisy jet engines is…
A: Given:Number of jet engines initially running: Sound intensity level when all the engines are…
Q: A sound has a certain intensity I1. It suddenly increases to I2 so that I2 = 250I1. What is the…
A: We can calculate sound level β of the sound of intensity I from its definition. β (dB)=10log10II0
Q: What is the sound intensity level at a distance of 1.0 km? Express your answer with the appropriate…
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Q: You work at a building site and the noise level has been measured at 95 dB. You need to wear…
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Q: A listener triples his distance from a source that emits sound uniformly in all directions. By how…
A: Intensity at distance (d) from the source is calculated aswhere,P is the power sourced is the…
Q: arks at a sound intensity level of β = 95 dB. a. Another dog runs up beside the first dog and…
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Q: 1. What is the speed of a sound wave in air at 300°K? What is the speed in helium at the same…
A: We know that,Cair Speed of sound in air=KRTKair=1.4R (Characteristic Gas Constant)=0.287…
Q: The sound intensity 3.6 m from an isotropically radiating point source is 0.86 W/m². What is the…
A: Power = Intensity × Area P = I × 4πr² P = 0.86 × 4π(3.6)² P = 140.059 W
Q: 1. Ultrasound is sent through a tissue with volume 0.05 L and mass 0.6 kg. The elastic modulus of…
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Q: The crowd noise at a volleyball match at the sheriff center was at a level of 80.0 dB. This…
A: Crowd noise intensity level = 80 dB crying sound intensity level of a baby = 75 dB
Q: . he sound intensity level at a certain location is 32 dB (like during a quiet test time). What is…
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Q: a) A sound wave moves through the air. Its frequency is 522.32 Hz. The air temperature is 11 °C.…
A: Given data Frequency f = 522.32 Hz Air temperature T = 11 deg C We have to calculate the…
Q: 4. A source emits sound uniformly in all directions. There are no reflections of the sound. At a…
A: Given Intensity of the sound = 5.0 × 10-3 W/m2 Distance of this intensity from source = 12 m We have…
Q: A force F of magnitude 920 lb is applied to point C of the bar AB as shown. Determine both the x-y…
A: A force F of magnitude 920 lb is applied to point C of the bar AB as shown in the figure. We need to…
Q: 1. What is the intensity in watts per meter squared of 85.5 dB sound? W 1= m²
A: The intensity of sound in dB is expressed as I in dB=10 logII0I0=1.0×10-12 W/m2 is intensity of…
Q: A sound has an intensity of 0.0000024 Watts per square meter. What is this sound's decibel level?
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Q: A boy has climbed to the top of a 6m tall tree. When he shouts, the sound waves have an intensity of…
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Q: Take an bottle with a narrow opening that had your favorite beverage in it, and when it is empty…
A: Sound is basically vibrations that propagate from one point to another. It requires a medium to…
Q: Sound can either be pleasing or distracting. Musical instruments such as piano creates sound that is…
A: Noise-cancelling headphones were originally created for airplane pilots to improve their comfort on…
Q: A spherical sound wave emanates from a small 0.003 W whist (i) intensity of the sound wave 2 m from…
A: Distance r = 2m Power p = 0.003 W Intensity is the rate at which energy is flow through unit…
Q: 5. A bat is flying towards a tree while emitting a sound wave with frequency 100 kHz. The bat hears…
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Q: Two observers, A and B. If A is at R1 = 59 m away from a sound source and B is at R2 = 6 m away from…
A: Given: R1 = 59 m (for A) R2 = 6 m (for B) Sound propagates in concentric circles just like ripples…
Q: 56. Suppose that a public address system emits sound uniformly in alldirections and that there are…
A: Distance from the sound source, r=22 m Intensity of the sound at distance r=22 m is I=3.0×10-4W/m2…
Q: 1. The intensity sound level in air is 68dB. Calculate Pmax if the temperature is 20°C, the density…
A: Given:- The intensity level of the sound is β= 68dB The density of the air is ρ = 1.20 kg/m3 The…
Q: 2. A train generates a sound wave of 123 microwatts/cm2 whilst the jet engine airplane generates 875…
A: Given data: The intensity of train is I1=123 mW/cm2. The intensity of jet engine airplane is I2=875…
Q: 9. A door bell generates a 58.0 dB sound at a close distance. What is the intensity of the sound…
A: The expression for the sound intensity is β=10 log10II0 ...................................... (1)…
Q: Two speakers are facing each other and producing a single pure tone. You are standing between the…
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Q: What is the intensity of a sound that has an intensity level of 95 dB? W/m? 60 ss
A: Given data: Intensity level (β) = 95 dB Required: Intensity of sound in W/m2
Q: 2. A spherical source radiates sound uniformly in all directions. At a distance of 11 m, the sound…
A: The distance from the source is 11 m.The intensity of the sound level is 94 dB.
Q: 4) A factory uses 12 metal stamping machines. When all machines are operating, they produce a sound…
A: To find the intensity of the sound produced by all 12 machines, we need to know the relationship…
Q: A singing barber shop quartet all together makes a 6. sound level intensity of 85 dB when you are…
A: The power and Intensity of sound waves are related by :- I = P4πr2 where I is…
Q: Q4) Doppler uses ultrasound to measure blood flow velocities. Suppose that the device emits sound at…
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Q: a. What is the frequency of the sound? Assume vsound 340 m/s. b. What is the phase difference…
A: Given data: Xini = 0.50 m Xfin = 0.90m v = 340m/s
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