Dolphins rely on echolocation to be able to survive in the ocean. In a 20∘C20∘C ocean, a dolphin produces an ultrasonic sound with a frequency of 115 kHz.115 kHz. Use 1530 m/s1530 m/s for the speed of sound in 20∘C20∘C ocean water. What is the wavelength ?� of this sound, in meters?   While remaining stationary, the dolphin emits a sound pulse and receives an echo after 0.180 s.0.180 s. How far away, in meters, is the reflecting object from the dolphin?

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

A: The speed of the sea monster is 7.11 m/s No, submarine is not in trouble as the speed of submarine…

Q: The speed of sound in air is 331 m/s at atmospheric pressure and 0 Celsius.  Suppose you put a…

A: we know that

Q: A bat at rest sends out ultrasonic sound waves at 60.0 kHz and receives them returned from an object…

A:

Q: The speed of sound in air is 331 m/s at atmospheric pressure and 0 Celsius. Suppose you put a…

A:

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: A typical adult ear has a surface area of 1.65 X 10-3m2. The sound intensity during a normal…

A: Given,

Q: A sound wave has intensity I, measured in units W/m^2. Show how to convert this intensity, I, to dB.

A: Given:-  A sound wave has an intensity I. The unit of intensity is W/m2. Find:-  Show how to convert…

Q: The sound of a loud rock concert has an intensity of 0.1240.124 W/m2. What is the intensity level in…

A:

Q: A 500-Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65 m.…

A:

Q: For an ecology project, Maria is recording some ambient sounds in the woods. A hawk emits a cry with…

A: Given data:  Frequency (f) = 8.06×102 Hz Speed of source (vs) = 16 m/s, towards observer The…

Q: The sound from a truck moving at  37m/s reflects from a cliff and is heard by an observer on the…

A: Given data: Speed of sound from truck is, vt=37 m/s. Initial wavelength of sound wave is, λ=0.15 m.…

Q: dolphin uses echolocation underwater to “see” its surroundings.  If the speed of sound in the ocean…

A: Find the time taken by the dolphin to hear an echo. ∆t=2dv

Q: A fire truck emits a sound with frequency of 775Hz a. What is the frequency detected by stationary…

A: Doppler effect is the change in frequency of a wave due to relative motion of the observer and the…

Q: You hear a sound of (4.0x10^1) decibels. What is the intensity? Give your answer in microwatts/m2…

A: Given data: Intensity level (β) = 4.0 × 101 dB Threshold of hearing (I0) = 1.0×10-12 W/m2  1 μW =…

Q: Crickets produce a musical chirping sound at a frequency around 10,000 Hz (very high pitched)! The…

A: Answer :-  Given   Frequency of sound (f) = 10000 Hz  Wavelength (λ) = 0.03 m  Speed of sound  = V…

Q: An fıre truck races down a road at 75 km/h with its siren blazing. The siren has a frequency of 580…

A: Calculate the speed of sound in air at T=22°C. v=331 m/s1+T273 °C=331 m/s1+22 °C273 °C≅344 m/s Here,…

Q: A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1370 Hz. The…

A: Data Given ,  Frequency emits by bird ( fs ) = 1370 Hz Frequency hears by bird watcher ( f0 ) = 1430…

Q: Sound travels at a speed of v = 1570 m/s in water. While underwater a student hears a f = 1.5 kHz…

A:

Q: A siren on a tall pole radiates sound waves uniformly in all directions. At a distance of 16,0 m…

A: Given data The first distance is, r1=16.0 m The first intensity is I1=0.250 W/m2 The second…

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: 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: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…

A: Answer:-  The hearing aid increase the intensity of sound level 34.2 dB or has a gain 34.2 dB . The…

Q: A source emits sound uniformly in all directions. There are no reflections of the sound. At a…

A: The distance between the point and the source,

Q: Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the…

A: Given:The diameter of the ear is .The intensity of the sound is .

Q: The sound intensity 9 m from an isotropically radiating point source is 0.78 W/m². What is the power…

A: Since the point is 9 m from the point source,  so, the  area of sphere covered is A =πr2  ⇒4×π×92 =…

Q: The prey moves towards The speed of the prey, Vprey = 13.52 x Units m/s What frequency will the bat…

A:

Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…

A:

Q: sound travels at 1540 m/s in body tissue. If an ultrasound device sends out a frequency of 10 MHz,…

A: Given, Speed of wave, v = 1540 m/s Frequency of sound, f=10 MHz=10×106=107 Hz

Q: Doppler blood flow unit emits ultrasound at 4.6 MHz. What is the frequency shift of the ultrasound…

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…

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.