Fighter jets are supersonic aircrafts that are able to break sound barrier and produce a thunder-like noise which is the “sonic boom.” Explain the sound intensity and propagation of a shock wave made by a supersonic aircraft. Based on our experience, lightning always comes first before thunder. This is due to speed difference. What causes thunder? Explain the sound intensity if the lightning is near you? How about if far?

Q: Q14/The intensity in w/m? of a sound level of 60db is--- --- knowing that --- the threshold of…

A: Sound intensity level  β in decibel is given by equation, β = 10 log10(i/i0) Where  i0 is is a…

Q: Hearing the siren of an approaching fire truck, you pull over to the side of the road and stop. As…

A: In this question we will be using dopplers effect. we have assumed thar speed of sound in air is 340…

Q: Bats rely on sound localization to be able to fly during the night. On a cool 20∘C20∘C summer night,…

A: frequency (f) = 39 kHz speed of sound (v) = 340 m/s

Q: An interesting method to remove brain tumor involves using an ultrasonic surgical aspirator, which…

A: Given  Frequency in air, F= 23 k Hz  Speed of sound in medium ,V2= 1480 m/s  Wavelength of sound in…

Q: Determine the length of a wind instrument, assuming that it is modeled as a closed tube and that the…

A: Given data:  A closed tube  Fundamental frequency (f1) = 104 Hz Speed (v) = 343 m/s Required: Length…

Q: The velocity of sound in air is approximately 330 m/s. a) Given that, what is the frequency of a…

A: a )  Given :- V= 330 m/s λ = 16.5 m V = f * λ 330 = f * 16.5 f = 330/16.5 f= 20 Hz frequency of…

Q: After your school's team wins the regional championship, students go to the dorm roof and start…

A:

Q: What is the frequency heard by a person driving at 15 m/s toward a blowing factory whistle (800 Hz)…

A:

Q: (I) What is the intensity of a sound at the pain level of120 dB? Compare it to that of a whisper at…

A: Given: Pain level = 120 dB Level of whisper = 20 dB

Q: The sound intensity from a jack hammer breaking concrete is 2.0 W/m2 at a distance of 2.0 m from the…

A: It is given that,

Q: Doppler ultrasound uses ultrasound to measure blood flow velocity. Suppose the device sends sound…

A: Given,v=1540 msvb=2 cms    =0.02 msfs=3.5 MHz    =3.5 ×106 HzThe Doppler effect will be used to…

Q: The sound intensity at a certain location is 4.0×10-6 W/m2. What is the sound intensity level at…

A: Given : Intensity at certain level (I) = 4.0×10-6 W/m2.    threshold intensity (I0) = 1 x 10-12…

Q: An interstate highway has been built though a poor neighborhood in a city. In the afternoon, the…

A: Loudness of the sound is IdB = 89.0 dB

Q: A car alarm goes off with a frequency of 2800 Hz in air with sound speed of 341 m/s. a. What…

A: Given data The frequency of the alarm is f = 2800 Hz. The speed of the sound is v = 341 m/s. The…

Q: The source of a sound wave has a power of 6.43 W. If it is a point source, (a) what is the intensity…

A:

Q: Q14/The intensity in w/m? of a sound level of 60db is-- - knowing that the threshold of hearing =…

A: Given: Sound level = 60db. L = 60 db or 6bel Threshold of hearing Io = 10-12 w/m2 To determine:…

Q: he toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its…

A: The relation of the intensity is β=10 log(II0)

Q: A family ice show is held at an enclosed arena. The skaters perform to music playing at a level of…

A: a). Write the formula to calculate sound intensity,

Q: A convertible with the top down is traveling north on a road at a speed of 27.0 m/s. A fire truck,…

A:

Q: Your friend is firing a gun, and you want to be a safe distance away, so you walk away until there…

A:

Q: Doppler ultrasound uses ultrasound to measure blood flow velocities. Suppose that the device emits…

A:

Q: Dolphins make sounds in air and water. What is the ratio of the wavelength la of a sound in air at…

A: λa/λs = speed of sound in air/speed of sound in sea waterλa/λs  = (331 + 0.6T)/1540λa/λs  = (331 +…

Q: Unless otherwise indicated, for this problem , assume that the speed of sound through human tissues…

A:

Q: How can it be shown that the speed of sound in 20.0o C air is 343 m/s. Air temperature in the Sahara…

A: The speed of sound in air in terms of temperature can be expressed as follows

Q: A car is moving to the left at 25 m/s while a truck is moving to the right at s 20m/s. If the truck…

A:

Q: The sound level at 1.0 m from a certain talking person talking is 60 dB.  A.How far will you have to…

A:

Q: The frequency of E, on the piano is 329.6 Hz. (a) What is the wavelength (in m) of sound with this…

A: The frequency of a wave is defined as the number of complete waves (a crest and trough) passes…

Q: A family ice show is held at an enclosed arena. The skaters perform to music with level 75.0 dB.…

A: Given data: Skaters sound level = 75 dB Baby sound = 70 dB Need to determine the total sound…

Q: What happens to a sound source that is passing by at constant speed? The sound and pitch vary…

A: When there is relative motion between source and observer ,then apparent frequency heard by observer…

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: Chapter 16, Problem 069 Your answer is partially correct. Try again. ES. lem The bellow of a…

A: The expression for the intensity is,

Q: Dolphins can hear ultrasound with frequencies up to 280 kHz. a) What is the speed of sound in water…

A: Given, Frequency 2.8x105 Hz wavelength 0.510cm=0.510x10-2m

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: A family ice show is held in an enclosed arena. The skaters perform to music playing at a level of…

A: Given data: β=82.0 dB Write the equation for the intensity. I =I010β/10

Q: The softest sound a human ear can hear is at 0 dB (Io = 10-12 W/m2). Sounds above 130 dB cause pain.…

A:

Q: Q15/The sound level in db of a sound intensity 10 w/m2 is-- knowing ---- that the threshold of…

A:

Q: For years, marine scientists were mystified by sound waves detected by underwater microphones in the…

A: Given:  frequency, f = 7 Hz  velocity, v = 1530 m/s

Q: 5. The sound intensity from a jack hammer breaking concrete is 2.30 W/m2 at a distance of 1.80 m…

A:

Q: (II) An airplane travels at Mach 2.1 where the speed of sound is 310 m/s (a) What is the angle the…

A: (a) Speed of sound = 310 m/s Mach number (M) = 2.1 sinθ=cv or1M The velocity will be, v=CMv=310…

Q: can someone help with this with explanation? thanks!

A:

Q: Doppler uses ultrasound to measure blood flow velocities. Assume that the device emits sound at a…

A: Given the Parameters : Frequency of device, F = 3.5 MHz = 3.2 × 10³ Hz Speed of sound in tissue = Vs…