A fish finder uses a sonar device that sends 20,000-Hz sound pulses downward from the bottom of the boat, and then detects echoes.Part AIf the maximum depth for which it is designed to work is 200 m , what is the minimum time between pulses (in fresh water)?

Q: he intensity level produced by a jet airplane at a certain location is 170 dB. (a) Calculate the…

A: Solution:   a) We know that, Intensity level I (dB)=10 log II0 Where, I0=10-12 W/m2 I(dB)=170 dB…

Q: Harbor seals, like many animals, determine the direction from which a sound is coming by sensing the…

A: Sound waves travel faster in water than in air. So, the difference in time of arrival of sound in…

Q: A room has dimensions of 4 x 6 x 3 m high. The walls are made by plywood paneling, the floor is…

A: To solve this problem, we'll need to use the principles of room acoustics, more specifically the…

Q: You are trying to overhear a juicy conversation, but from your distance of 19.0 m, it sounds like…

A:

Q: A point source emits a sound of 450 W of power, a small microphone with an area of ​​0.55 cm2…

A: Given data- A point source emits a sound of power P=450 W microphone area A=0.55 cm2 distance of two…

Q: It is found that the intensity level of sound from a loudspeaker is 35 dB at a distance of 35 m from…

A: Approach to solving the question:Sound intensity and power relationshipDetailed explanation:

Q: Increased shipping represents a global threat to marine life. A phenomenon known as the bow…

A:

Q: A bat emits ultrasonic sound of frequency 1000HZ in air. If this sound meets water surface, What is…

A: The wavelength of reflected sound:-λref=vairf=340 m/s1000 Hz=0.34 m

Q: A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under…

A: SONAR is a device used to detect and locate objects under water using ultrasonic waves. The speed of…

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: person at a concert is 4.15 m from one speaker and 4.35 m from another speaker. The sound produced…

A:

Q: High‑intensity focused ultrasound (HIFU) is one treatment for certain types of cancer. During the…

A: We have to use some basic formula.

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

A:

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: This ship is surveying a lake bed with ultrasonic sound that travels 1400 m/s in freshwater. The…

A: Speed of ultrasonic sound in water, v = 1400 m/s  Time taken by sound to reach back to the observer…

Q: A loudspeaker, mounted on a tall pole, is engineered to emit 75% of its sound energy into the…

A:

Q: A sonar signal of frequency 1 x 10^6 Hz has a wavelength of 1.5 mm in water. a) What is the speed of…

A: The speed of sonar wave in water was calculated by the equation: v = fλ where, λ is wavelength of…

Q: Show that the difference in decibel levels ß, and B, of a sound source is related to the ratio of…

A:

Q: The propagation speed of a continuous wave ultrasound is 1.76 m/sec using a 2 MHz transducer. You…

A:

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

A:

Q: A sonar system fixed in a submarine operates at a frequency 50.0 kHz .An enemy submarine moves…

A: In the given question the source is at rest and the observer is moving towards it. There will be a…

Q: q31 A sound wave radiates from a speaker in all directions. If the power of the sound source is 400…

A:

Q: An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic sound (sound frequencies…

A: Given, The speed of the sound, v=1530 m/s The time delay, t=10 s

Q: A piano tuner uses a tuning fork that emits sound with a frequency of 440 s-1 . Calculate the…

A: Given, Frequency of tuning fork f = 440 s-1  Velocity of sound v = 343 m/s Distance travel by sound…

Q: The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the…

A: listening position icrease from23 dB to 61 dB

Q: A small source emits sound waves with a power output of 95 W. Take I0 = 1 x 10-12 W/m2. Find the…

A: Given : Sound wave's power →P=95 W Initial intensity →I0=1×10-12 W/m2 Distance →r=700 cm=7 m Sound…

Q: Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power…

A:

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…

Q: Two speakers emit sound waves of different frequencies as shown in the figure: Speaker A has a power…

A: power of speaker A = 1.00mW Power pf speaker B = 1.50 mW

Q: Humans perceive sound with frequencies in the range 20to 20,000 Hz. Speech lies in the middle of…

A: a) Let us consider the width of a typical doorway be 75 cm=0.75 m b) we know the velocity of sound…

Q: Imagine the  time delay between the transmission and the arrival of the reflected wave of an…

A: The time delay between the transmission and the arrival of the reflected wave is 0.15 ms. The speed…

Q: speaker is producing spherically symmetric sounds with a total power of 88.5 W. If the speaker is…

A: