Bats of the Vespertilionidae family detect the distance to an object by timing how long it takes for an emitted signal to reflect off the object and return. Typically they emit sound pulses 3.00 ms long and 70.0 ms apart while cruising. If an echo is heard 32.8 ms later (vsound = 331 m/s), how far away is the object? When an object is only 39.2 cm away, how long will it be before the echo is heard? When an object is only 39.2 cm away, the bat  __________   able to detect the echo.

Q: A typical sound level for a buzzing mosquito is 35 dB, and that of a vacuum cleaner is approximately…

A: Given, sound level for a buzzing mosquito=35dB sound level for vacuum cleaner=65dB

Q: A police car is approaching you at 26 m/s while you are at rest. The rest frequency of the siren is…

A: Given data:  Source is approaching to observer  Observer at rest  Velocity of the source (vs) = 26…

Q: In this problem take the speed of sound to be 348 m/s. A. How fast, in meters per second, does an…

A: Given: speed of sound, v = 348 m/s

Q: A person is standing 20 meters away from a wall. They clap their hands, creating a sound that…

A: The distance between the person and the wall is 20 meters.The speed of sound in air is 343 meters…

Q: Two submarines A and B are approaching each other along a straight line as shown below. The speed of…

A:

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

A: The reflected wave dropper shift as,

Q: A bat emits ultrasonic pulses and uses them to navigate and to locate flying insects. If these…

A: Rate of pulse emission: p=2 pulses per second Speed of sound in air: v=344 m/s

Q: During a thunderstorm, you see a strike of lightning and then five seconds later you hear the…

A: The time taken by the lightning strike to reach our eye is given by The time taken by the thunder…

Q: The speed of sound at sea-level is 340.29 m/1 second. If lightning strikes 10.0 miles away, how many…

A: According to question we need to find the value of time take for you to hear sound ?

Q: You are hiking to the top of a small canyon. When you stop for a rest you decide to shout "hello"…

A:

Q: A whistle you use to call your hunting dog has a frequency of 42 kHz, but your dog is ignoring it.…

A: Given:  frequency,  f = 42 Hz  Apparent frequency, f' = 40 Hz

Q: an ultrasonic scan uses the echo waves coming from something moving inside the body and the waves…

A: In an ultrasound scan, we can calculate the beat frequency using the Doppler effect formula for…

Q: A group of hikers hears an echo 4.00 s after shouting. How far away is the mountain that reflected…

A:

Q: On a 20°C°C night, a bat hovering in the air emits an ultrasonic chirp that has a frequency of 45…

A: It is given that, the temperature of the air is T=20°C the frequency of the source is f=45…

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

A:

Q: We can estimate the length of an aluminum fence by comparing the sound heard through the fence and…

A:

Q: A group of hikers hears an echo 1.60 s after shouting. How far away is the mountain that reflected…

A:

Q: Horseshoe bats use the Doppler effect to determine their location. A Horseshoe bat flies toward a…

A: Given:        Speed of Horseshoe batv= 15 m/s        Frequency of emitted sound f= 19.6 kHz…

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: An osprey (a type of hawk) has a distinct call: a whistle at 2100 Hz. An osprey calls while diving…

A: Frequency of whistle , fo = 2100 Hz Frequency of whistle heard , f= 2400 Hz Speed of sound , V = 343…

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: 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: A bat is using echolocation to find insects at night. If the bat emits a high frequency chirp and…

A: Given, The bat emits a high frequency chirp and hears an echo 0.031 s later. Temperature of air is…

Q: A sound source with a frequency of 725 Hz moves away from a stationary observer at a rate of 15m/s…

A: When there is a relative motion between the observer and the source, the observed frequency of the…

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.