A bat is using echolocation to find insects at night. If the bat emits a high frequency chirp and hears an echo 0.031 s later, how far away is the insect? The temperature of the air that night is 24°C.

Q: Two ultrasonic sound waves combine and form a beat frequency that is in the range of human hearing…

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Q: A Doppler blood flowmeter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency…

A: Given that, fs=5.0 MHzvo=0.15 m/s The beat frequency between the waves that are emitted and the…

Q: A sound wave with intensity 2 x 10 -3 W/m2 is perceived to be modestly loud. Your eardrum is 6 mm in…

A: Intensity of sound (I) = 0.002 Wm2Diameter of eardrum (d) = 6 mm

Q: he ear canal is an open-closed tube for sound waves. A person has ear canal 3 cm long. Sound speed…

A: ear canal is open closed tube at open end there is antinode. at closed end there is node. distance…

Q: A spaceship is approaching a space station at a speed of 1.60 ✕ 105 m/s. The space station has a…

A: Given data: u = 1.60 ✕ 105 m/s fs = 5.94 ✕ 1014 Hz c= 2.9979 ✕ 108 m/s Need to determine the…

Q: Light is an electromagnetic wave and travels at a speed of 3.00 × 10^8 m/s. The human eye is most…

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Q: A geological survey ship mapping the floor of the ocean sends sound pulses down from the surface and…

A: The speed of the sound in seawater at is The echo time is The time taken by signal to travel from…

Q: Yellow light travels through a certain glass block at a speed of 1.97 ✕ 108 m/s. The wavelength of…

A:

Q: Image the blood's speed? [No That i

A: The reflected wave dropper shift as,

Q: A bee is emitting a frequency of 300Hz.  The bee is flying towards you at 2m/s while you are running…

A: The observed frequency when the source is moving towards the observer and the observer is moving…

Q: A bat can detect small objects, such as an insect, whose size is approximately equal to one…

A:

Q: A Doppler blood flowmeter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency…

A:

Q: Solar cells convert the energy of incoming light to electric energy; a good quality cell operates at…

A: The efficiency of the good cell,   The average rate of power,   The average intensity of solar…

Q: The low-frequency speaker of a stereo set has a surface area of 0.05 m2 and produces 1W of…

A: Given: The surface area of the stereo set =0.05 m2 The stereo set produces 1 W of acoustical power…

Q: A typical adult ear has a surface area of 2.1×10-3m2. The sound intensity during a normal…

A: Area, A = 2.1×10-3 m²Intensity, I = 3.2×10-6 W/m²Power, P = ?

Q: An ambulance traveling at a speed of 20.0 m/s sounds its siren, which has a frequency of 2. 00 · 10°…

A:

Q: A truck moving with a speed of 31.8 m/s sounds a 136 Hz horn. What frequency is heard by an observer…

A: The observer status near the tracks is the receiver of the sound wave, and because the truck is…

Q: The eardrum, which transmits vibrations to the sensory organs of your ear, lies at the end of the…

A:

Q: You see an approaching train while standing on a railway platform. It blows its whistle, which you…

A: Given: Frequency of the source train: fs=500 [Hz] Frequency heard by stationery observer: f0=100…

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 bat uses echolocation to detect prey as small as about 1 wavelength of the sound of a bat call.…

A: We will answer the question using relation connecting speed of a wave to its frequency and…

Q: The intensity of a sound wave emitted by a radio is 5.00 µW/m2. What is the sound level (in dB)?

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Q: A bat can detect small objects, such as an insect, whose size is approximately equal to one…

A: As we know that the wavelength is called to be the ratio of the speed of the wave to its frequency.…

Q: A physics professor demonstrates the Doppler effect by tying a 600 Hz sound generator to a…

A: We have to determine the highest and the lowest frequency heard by a student in the class.

Q: A wave is moving at 9.4 m/s in the direction in which the waves on a lake are moving. Each time he…

A: Given: Velocity of jetskier with respect to ground, v = 9.4 m/s Frequency of bumping, f = 8.9 Hz…

Q: The low-frequency speaker of a stereo set has a surface area of 0.05 m2 and produces 1W of…

A: Given data The area of the surface is A=0.05 m2 The acoustical power is P=1 W The intensity at…

Q: Bats emit ultrasonic waves with a frequency as high as 1.10 × 105 Hz. What is the wavelength of an…

A:

Q: Dolphins of the open ocean are classified as Type II Odontocetes (toothed whales). These animals use…

A: (a)The depth of the ocean = 70.8mThe total distance travelled by the “clicks” = 2×70.8m = 141.6mThe…

Q: A ship mapping the depth of the ocean emits a sound of 47.8 kHz. The sound travels to the ocean…

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Q: Although 0 dB is often referred to as the lower threshold of human hearing, it is important to…

A: Part(A) a) the least intense sounds are heard at frequencies   ( For 0 phons  curve, the lowest…

Q: Two students hear the same sound and their eardrums receive the same power from the sound wave. The…

A: Given; Let there be two students A and B.  Both receives the same power from sound wave i.e. PA =…

Q: A bat can detect small objects, such as an insect, whose size is approximately equal to one…

A: speed of sound in air = 343 m/sfrequency = 76900 Hz using formula speed = frequency * wavelength

Q: There was an accident and NASA engineers are trying to sort out where two of their Mars Rovers,…

A: Recall VαTSpeed of sound is proportional to square root of temperature.

Q: The crew of a ship going 35.4 m/s towards a distress beacon hears a frequency of 11khz. What is the…

A:

Q: Solar cells convert the energy of incoming light to electric energy; a good quality cell operates at…

A:

Q: A violin string with a length of 50 cm and a linear density of 0.650 grams/m  placed next to a…

A: Given:  Length of string L=50, Linear density 0.65 g/m Violin string is set at 880-1420Hz To find:…

Q: A piano wire with a mass of 2.75 g and a length of 85 cm is stretched with a tension of 30 N. A wave…

A:

Q: Dolphins rely on echolocation to be able to survive in the ocean. In a 20 °C ocean, a dolphin…

A:

Q: Most bats use echolocation to navigate and hunt. They emit pulses of high frequency sound waves…

A: Object distance, d=12.5 mSpeed of sound, v=345 m/s

Q: A bat can detect small objects, such as an insect, whose size is approximately equal to one…

A: Given,        frequency (f) = 51.0 kHz                            =  5.1 * 104 Hz   speed of sound…

Q: rou've entered the Great Space Race. Your engines are hearty enough to keep you in second place.…

A: Frequency of light is f = 5.640 x 1014 Hz Speed of the person is v = 2627 km/s = 2627000 m/s

Q: Going down the road at 65 miles per hour on a 86.0 °F summer day, Bari heard a siren approaching.…

A: a) To find the speed of sound on that warm summer day, we can use the formula: v = 331.5 + 0.6T…

Q: The lower limit of the human singing voice is 65 Hz. What is the wavelength of this frequency in 20…

A: Given:  Frequency = 65 Hz  velocity of sound = 344 m/s

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.