A sailor working on boat maintenance while at sea hits the side of his boat with a hammer just below the water line. He hears an echo of the sound reflected from the ocean floor, directly below the boat, 2.5 seconds later. How deep is the water at this location? Assume the speed of sound in sea water is 1560 m/s and does not vary with depth.

Q: A woman is standing in the ocean, and she notices that after a wave crest passes by, five more…

A: Given, 5 crests pass in time 57.7s. So the frequency of the wave will be, f=557.7s≈0.0867s-1 And the…

Q: A supersonic jet traveling at Mach 2.00 at an altitude of h = 21,000 m is directly over a person at…

A: speed of jet= 2 Mach altitude= 21 km speed of sound= 335 m/s Let x= distance travelled by plane when…

Q: ssume that the speed of sound is 343 m/s at 20 degrees C. Also assume that a bat uses an ultrasonic…

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Q: Tsunamis are fast-moving waves often generated by underwater earthquakes. In the deep ocean their…

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Q: The speed of sound in air is 343 m/s, while the speed of sound in metal-x is 1570 m/s. If an…

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Q: Medical ultrasound machines typically use frequencies in the range of 2 MHz to 18 MHz. (a) What are…

A: Given data: The frequency is f1=2 MHz. The frequency is f2=18 MHz. The speed of the ultrasound in…

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

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Q: The frequency reminds 1090.7 Hz. The air temperature changes to 45 ˚C. Calculate to the nearest…

A: variation of speed of sound with temperature is given by v=331.3+( 0.606×T) T is temperature in…

Q: a tissue has a wavelength of 0.50 mm. (a) What is the speed of sound, vs (in mm/µs) in this tissue?…

A: 1 M Hz = 106 Hz Wavelength = 0.5 mm = 0.5 × 10-3 m

Q: 8. A loudspeaker emits sound waves isotropically (uniformly in all directions). Listener number one,…

A: Given data: Intensity of sound waves at R1=20.0 m is β1=85.0 dB. Conversion dB to W/m2 is given…

Q: A group of hikers hears an echo 3.20 s after shouting. How far away is the mountain that reflected…

A: Given, time (t) = 3.20 s             speed of sound (v) = 346 m/s The sound pulse emitted by the…

Q: An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic sound that travels 1530…

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Q: A certain instant camera determines the dis- tance to the subject by sending out a sound wave and…

A: distance = velocity * time  Given :-  d = 2.07 m v= 343 m/s

Q: The speed of a 25-kHz sound wave in seawater is approximately 1650 m/s. What is its wavelength in…

A: Given, Frequency of the sound wave = 25 KHz Speed of sound wave in seawater = 1650 m/s. We know…

Q: You see condensed steam expelled from a ship whistle 4.948 seconds before you hear the sound. If the…

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Q: How far way is a storm if you hear the sound of thunder 7.0 s after the lightening flash on a day…

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Q: A dolphin swims directly at a reef in water of low visibility, using its echolocation by sending out…

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Q: The sound intensity from a jack hammer breaking concrete is 2.40 W/m2 at a distance of 1.90 m from…

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Q: There are Doppler effect blood flow meters that are based on the reflection of sound from red blood…

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Q: Bats of the Vespertilionidae family detect the distance to an object by timing how long it takes for…

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Q: A group of hikers hears an echo 1.30 s after shouting. How far away is the mountain that reflected…

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Q: (a) A sonar echo returns to a submarine 3.20 s after being emitted. What is the distance to the…

A: a). The speed of sound in water is, v = 1540m/s Let the distance to the object creating the echo be…

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.