#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…
A:
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,
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: 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: 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: arks at a sound intensity level of β = 95 dB. a. Another dog runs up beside the first dog and…
A:
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: 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…
A:
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: 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: 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: 5. A bat is flying towards a tree while emitting a sound wave with frequency 100 kHz. The bat hears…
A:
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: Two speakers are facing each other and producing a single pure tone. You are standing between the…
A:
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: 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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- B69) It is a hot summer day. The temperature is 35 °∁ . A car is traveling at 18.846 km/hour honking it 1000Hz horn.a) What is the speed of sound at that temperature?b) The car is traveling towards you. What is the frequency you hear?c) The car is traveling away from you. What is the frequency you hear?5. The sound intensity from a jack hammer breaking concrete is 2.30 W/m² at a distance of 1.80 m from the point of impact. This is sufficiently loud to cause permanent hearing damage if the operator doesn't wear ear protection. What is the sound intensity for a person watching from 43.0 m away? X 95.05) W/m2 36 S 6 skp1 36 skpls
- Tornado Siren. The frequency of a tornado siren is 920 Hz. If a cyclist is moving toward the siren at 10 m/s in 15 °C air, which has a speed of sound of 340 m/s, what is the frequency that the cyclist observes?2. Emma needs to know the fundamental frequency of a guitar string. She sounds the string together with an 840Hz tuning fork, and counts 15 beats in 5.0s. She then sounds the string with an 835Hz tuning fork and counts 2 beats every second. What is the frequency of the string?2. Two boys are whispering in the library. The radiated sound power from one boy's mouth is 1.2 × 10-9 W and it spreads out uniformly in all directions. What is the minimum distance the boys must be away from the librarian so that she will not be able to hear them? The threshold of hearing for the librarian is 1.00 x 10-12 W/m².