A DJ is setting up their equipment and measures the sound level near a speaker to be 79dB. They decide to add two more speakers next to the first. What would they measure the new sound level to be?

Q: During sound digitizing the sound frequencies ranged from 500 Hz to 5 kHz. Based on Nyquist theorem…

A: During sound digitizing the sound frequencies ranging from 500 Hz to 5 kHz. Based on the Nyquist…

Q: What is the intensity of a sound that has an intensity level of

A:

Q: How much louder is a 50 dB sound than a 10 dB sound? A 5 times B 25 times C 40 times D 10 000 times

A: The unit of loudness of sound is called decibel. It is denoted by dB.  The loudness is a measure of…

Q: What frequency sound has a 0.824 m wavelength when the speed of sound is 300 m/s? Hz

A: To determine: The frequency of the sound   Given: Wavelength of sound, λ=0.824 m Speed of sound,…

Q: If a sound source is located at the junction of 3 surfaces perpendicular with each other, its…

A: Sound source is located at the junction of 3surfaces perpendicular with each other.

Q: A sound wave in air has a frequency of 409 Hz. What is its wavelength? Calculate the wavelength for…

A: Given data, (1) f=409 Hz (2) f=454 Hz

Q: a rod speaker has an output of 70 DB if the volume of the sound is turned up so that the output…

A:

Q: A whistle produces sound of frequency of 1.00 kHz. If a listener moves with a speed of 30 m/s away…

A:

Q: A DJ is setting up their equipment and measures the sound level near a speaker to be 44.72dB. They…

A: Given,

Q: A stereo is connected to two speakers, each sounding the same music. If each speaker independently…

A:

Q: How much louder is a 40 dB sound than a 10 dB sound? A 4 times B 30 times C 400 times D 1,000 times

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Q: A police car is sounding a siren with 1280 Hz on a 20A???? You are standing beside the road. What…

A: The expression for the frequency is given by, f'=f×v+vcv-v0

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: A quiet library has a sound intensity level of 40 dB, and a rock band has a sound intensity level of…

A: The sound intensity of given by β=10log10II0I is the intensity of soundI0 is the threshold of human…

Q: A trumpeter plays at a sound level of 75 dB. Six equally loud trumpet players join in. what is the…

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Q: Sea lions are able to hear frequencies of sound from 200 Hz to 50 kHz.  The speed of sound in air is…

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Q: An ambulance siren has a frequency of 1200 Hz and is moving towards you with a speed of 22 m/s.…

A: The number of waves flowing through a spot in a unit of time is known as frequency. The distance…

Q: An observer is standing in front of a speaker that emits a sound at 800 Hz. How far behind could an…

A: frequency emitted by each speaker = 800 Hz the distance of first speaker from the observer = d the…

Q: hat factor is the sound  intensity reduced if ear  protectors

A: if ear  protectors can reduce sound  levels by 40 dB Find:- By what factor is the sound intensity…

Q: Dogs have the ability to hear sounds up to 40,000 Hz. If the speed of sound is 340 m/s, what is the…

A: Given, Dogs have the ability to hear sounds up to f = 40,000 Hz. speed of sound in air, v = 340 m/s,

Q: If the sound level in a place increased from 50dB to 60dB, by what factor has the actual intensity…

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Q: The area of a typical eardrum is about 5.0 × 10–5m2 . Calculate the sound power (the energy per…

A: It is given that,

Q: Today we measured the speed of sound to be 344 m/s. What is the temperature in Celsius?

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Q: A clarinet player is sounding a sustained tone of 264 Hz. A second player sounds what he intends to…

A: Given:First frequency,f1=264 HzBeat frequency,fbeat=4 beat/secondFind second frequency,f2Now, Beat…

Q: Approximately how many times louder (i.e., Sound Level) is a 100‐dB sound than a 60‐dB sound?…

A: Recall β=10dBlog(I/I0)

Q: If a sound is perceived as being 8x louder than a 33 dB sound. What is the decibel level of the…

A: Given:If a sound is perceived as being 8x louder than a 33 dB sound.Find the decibel level of the…

Q: You have a 8 MHz sound wave moving at 344 m/s. If the frequency of the wave is reduced to 4 MHz, how…

A: Given that:- Frequency of the wave =8MHz Speed of wave=344m/s

Q: A person standing a certain distance from eighteen identical loudspeakers is hearing a sound level…

A: Given  18 Identical loudspeakers with sound level intensity of 117 dB To find out Sound level…

Q: What is the frequency of a 0.0007 m wave traveling through human tissue at a speed of 1540 m/s?…

A: Given data:  Wavelength (λ) = 0.0007 m Speed (v) = 1540 m/s 1 MHz = 1,000,000 Hz Required: Frequency…

Q: A freight train coming down the tracks has a sound level of 88 dB, while the sound of the birds…

A: Given Data:- Sound level of the freight train is βt=88 dB Sound level of the birds chirping is βb=32…

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

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Q: If a rock concert has a sound level of 90 dB at a distance 10 m away from the concert point. What is…

A: Given: Sound level at a distance of 10 m away from source,  β1 = 90 dB

Q: Approximately how many times louder is a 130-dB sound than a 70-dB  sound?

A: Solution: given that S1 = 130-dB S2 = 70-dB  how many times louder is S1 from S2

Q: A 60.00-cm guitar string under a tension of 50.000 N has a mass per unit length of 0.100 00 g/cm.…

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Q: Calculate the sound level (in dB) that is produced by earphones that create an intensity of 7.50 ✕…

A: The intensity of the sound is, I=7.5×10-2 W/m2 The threshold intensity of hearing is, I0=10-12 W/m2

Q: Approximately how many times louder is a 140-dB sound than a  70-dB sound?

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Q: The sound waves travel with speed of 290 m/s. If is wavelength is 20 m What is the frequency of wave…

A: Introduction :  In this question we are provided with value of wavelength and wave speed . with…

Q: WHAT IS THE BEAT FREQUENCY PRODUCED BY TWO SOUND WAVES RESONATING AT 825 HZ AND 936HZ

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Q: What is the intensity of a 70-dB sound

A: Given: Sound level in decibel = 70 dB

Q: If the speed of sound is 349 m/s, what is the temperature on that day?

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Q: If the sound waves produced by a speaker change to a much higher frequency, what would it sound…

A: Required : Sound of higher frequency would be like..

Q: Approximately how many times louder is a  170-dB  sound than a  90-dB  sound?

A: Given  B1 = 170 -dB  B2 = 90-dB  Let I1,I2 be the intensity for each case  Thus  I1/I2 = ?????

Q: A loud speaker has an input of 70 dB. If the volume of the sound is turned up so that the output…

A: The input intensity of the loudspeaker can be calculated as…

Q: What are the three longest wavelengths for standing sound waves in a 127-cm-long tube that is (a)…

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Q: How many times louder would a 68.0 dB sound be compared to a 48.0 dB sound?

A: here, L2=68.0 dBL1=48.0 dB

Q: A speaker is producing 30 W of sound. At which of the following frequencies would it sound the…

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Q: The sound waves with a frequency below 20 Hz is called a. Infrasonic b. X ray c. Ultrasonic O d.…

A: Q14 Given thatFrequency of the Sound wave f < 20 Hz.

Interference of sound

Seiche

A seiche is an oscillating standing wave in a body of water. The term seiche pronounced saysh) can be understood by the sloshing of water back and forth in a swimming pool. The same phenomenon happens on a much larger scale in vast bodies of water including bays and lakes. A seizure can happen in any enclosed or semi-enclosed body of water.