the reflection of sound is often heard as an echo. if a person claps her hands and hears an echo off a wall 0.25s later, how far away is the wall? the speed of sound is 300ms^-1.

Q: What is the speed of sound (in feet per second) on a hot day with a temperature of 108°F?

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Q: A mosquito flaps its wings 600 vibrations per second, which produces the annoying 600 Hz buzz. How…

A: Frequency (f) = 600 Hz Speed (s) = 340 m/s

Q: A) Sound waves are being reflected by the drum. B Sound waves are being transmitted through the air…

A: In the above figure, the mallet truck to the first drum produces the sound because of the vibration…

Q: A car has frequency of 2000 Hz as heard by a passenger in the car. And The car is moving at a speed…

A: The first car which has a frequency, and the second car which receives the frequency both are…

Q: You are standing still at a railroad crossing when the driver of the train sounds its whistle. You…

A: Given: A train whistles

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 19 times the…

A: Speed of sound in air = 347 msspeed of sound in rod = 19 times the speed of sound in air time…

Q: When poked by a spear, an operatic soprano lets out a 1200-Hz shriek. What is its wavelength if the…

A:

Q: A submarine trying to detect an enemy destroyer notes that a sonar signal sent through the water…

A: Given that: The frequency of the sonar used = 20KHz  sonar signal sent through the water returns =…

Q: A sound wave travelling in a dense medium has a frequency of 20 KHz and a wavelength of 40 cm. What…

A: Write the expression for the speed of the waveform. Here, n represents the frequency and λ…

Q: How fast should you move away from a 6.0 x 1014 Hz light source to observe waves with a frequency of…

A: From the doppler effect, the expression for the wavelength is: Substitute the known values and…

Q: Sound waves moving towards a stationary observer will: • have a shorter wavelength • have a higher…

A:

Q: A bat's sqeak takes 0.146 s to retun after reflecting off a moth.  How far away is the bat from the…

A: The time to reach the moth is,

Q: A police car is driving with speed v_p towards a wall and uses a siren with frequency f_s. The sound…

A: Scenario : A police car uses a siren and is moving towards a wall and sound waves are reflected by…

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the…

A:

Q: Mr. Alaniz is on the edge of a majestic canyon with his guitar as he sings a power ballad of the…

A: Data Given: Speed of sound in air (V) = 343 m/s Time (t) = 1.41 seconds

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

A:

Q: A diver below the surface of a lake hears the sound of the siren of a boat on the surface just above…

A:

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 16 times the…

A:

Q: Speed of sound in air = 343 m/s Speed of light = 3×108 m/s  A few periodic sound waves of…

A: (a) Given data:                       Frequency = 20 kHz = 20×103 Hz      Formula :…

Q: If the sound wave hits the cold air interface at an angle of 35°, what is the angle of refraction?…

A:

Q: A giant sea monster chases a deep sea submarine near the bottom of the North Atlantic. The…

A: Speed of submarine (v) = 30 msFrequency of sound signal emitted by sea monster (f) = 1000 Hz…

Q: A man strikes one end of a thin rod witha hammer. The speed of sound in the rod is 16 times the…

A:

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 17 times the…

A: Given: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 17 times…

Q: -Sum of all components in normalized histogram before and after equalization are respectively. a)…

A: Sum of all components in normalized histogram before and after equalization is equal to 1 So 1and 1…

Q: Ultrasound is absorbed in the body; this complicates the use of ultrasound to image tissues. The…

A:

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the…

A: Given Velocity of sound in air(Va) = 347 m/s Velocity of sound in the rod = 15 Va Interval between…

Q: How far away is a gun being shot if it takes 5.4 seconds for an observer to hear the gun shot?…

A:

Q: Aman strikes one end of a thin rod with a hammer. The speed of sound in the rod is 16 tirmes the…

A:

Q: A stationary motion detector sends 0. 180 MHz directed to an approaching vehicle at a speed of 43.0…

A:

Q: A Kundt's tube apparatus has a copper rod of length 1.0 m clamped at 25 cm from one of the ends. The…

A: Speed of sound in air,

Q: cos e Mg 4f²L (1.00 kg)(9.80 m/s²) cos 35.0° 4(60.0 Hz) (0.300 m) |1.86 g

A:

Q: A man standing 300m in front of a cliff fires a cannon. After how many seconds later will he hear…

A:

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 17 times the…

A: Let L be the length of the rod. Then the time travel by the sound wave in the rod will be…

Q: A celebrity holds a press conference, which is televised live. A television viewer hears the sound…

A:

Q: A person claps her hands while standing on the edge of a cliff overlooking a valley that is 688 m…

A:

Q: A person of mass 50 kg has a wavelength of 4.42 x 10^-36m when running. How fast is she running?

A:

Q: You are watching a baseball game on a day when the air temperature is 20 oC. You see the bat hit the…

A: Consider the speed of sound be v, the distance of the home plate be s, and the time taken by the…

Q: Certain blue lights have a frequencey of 6.9 x 106 Hz. What is the wavelength? O 7.85 m O 43.5 m O…

A: Given data: Frequency f=6.9×106Hz. Wavelength λ=?

Q: A bat’s squeak takes 0.146 s to return after reflecting off a moth. How far away is the bat from the…

A: Let the distance of the bat from the moth to be d. The expression for the speed is written as, So,…

Q: If wave of wavelength=100m in deep water is observed from a moving ship with constant speed of 7m/s.…

A: Given Data: The wavelength of the wave is: λ=100 m The constant speed of the wave is: v=7 m/s

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 15 times the…

A:

Q: The intensity of the sound wave from a jet airplane as it is taking off is 105 W/m² at a distance of…

A:

Q: A cold distance planet has an atmosphere of hydrogen (speed of sound = 1320 m/s) over a liquid ocean…

A: Determine the refractive index for the hydrogen.  Determine the refractive index for carbon…

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 17 times the…

A:

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.