A airplane approaches at an altitude of 10 km flying at 600 km/hr.   1.  If the air temperature on average is -10 °C, what is the speed of sound in air? 2.  If the plane will be overhead in 1 minute, when will we hear it coming? 3.  Assuming the plane emits a frequency of 2000 Hz from its engines, what frequency do we hear initially when it is 1 minute away, and what frequency do we hear 1 minute after it has passed by?

Q: A submarine is moving toward another submarine at 17.79 m/s. It emits a 6.9-MHz ultrasound. What…

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Q: What are the three longest wavelengths for standing sound waves in a 84-cm-long tube under the…

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Q: You are standing still at the edge on a rioad. A frequency of 389 Hz is being sung by a person…

A: Whenever there is a relative motion between an observer and a distant sounding source, the frequency…

Q: A human cannot hear sound at a frequency of 100 kHz or sound at 102 kHz. But if you walk into a room…

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Q: Describe 2 ways that waves can interact with physical boundaries to their medium?

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Q: f a water waves oscillates up and down three times each second and distance between wave crests is…

A: Given: Number of times water wave oscillates N = 3 times in each second distance between the wave…

Q: A 100-Hz pure tone at a 70-dB sound level and a 1,000-Hz pure tone at the same sound level are heard…

A: Given that, Sound level of 100 Hz is 70-dB sound level of 1000 Hz  is 70-dB

Q: You shake a slinky continuously in an up and down fashion such that a transverse waves propagate…

A: Solution : Here, 5 peaks means 2.5 of wavelength separation between two peaks = (λ/2)

Q: If a source of sound moves toward an observer who is at rest, would the observer hear a higher or…

A: The change in the pitch heard when a vehicle sounding a horn approaches and recedes from an observer…

Q: At Zion National Park a loud shout produces an echo 1.50 s later from a colorful sandstone cliff.…

A: Given: Time taken t = 1.50 s Speed of sound in air V = 343 m/s We have to calculate how far is the…

Q: If a 7.48 kHz sound source moves at a speed of 11.9 ms-1 toward a listener who moves at a speed of…

A: According to the Doppler's effect, the apparent frequency heard by the listener is, f'=v+v0v-vsf…

Q: 11. What happens to sound waves when the doppler effect occurs? What happens to light waves when the…

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Q: the difference between a 300Hz sound wave and

A: The number of oscillations per second is known as the frequency of oscillation. Its unit is hertz…

Q: A 440 Hz pure note is sounded with an unknown frequency with a higher pitch. If you hear 2 beats per…

A: Given data The frequency of the pure note is: f pure note = 440 Hz The number of beats is: f beat =…

Q: vacuum cleaner makes 60 decibel sound, whisper is 20 decibel, how much louder the vacuum cleaner is?…

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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 ambulance traveling at 26 m/s goes down a street with its siren at a constant frequency of 10,000…

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Q: Sound waves are all of the following EXCEPT O it requires a medium O high and low O soft or loud O…

A: Only high frequency

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: If a sound wave has a low frequency, will the pitch be high or low Why?

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Q: What are the closest frequencies to 500 Hz that an average person can clearly distinguish as being…

A: Given:  Frequency, f = 500 Hz

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: The speed of sound in air at 20∘C is 344m/s. What is the wavelength of a sound wave with a frequency…

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Q: A 1,720-Hz pure tone is played on a stereo in an open field. A person stands at a point that is 4 m…

A: AIM: To find that whether a person can hear the given frequency of tone from a certain position…

Q: What is the speed of a wave with frequency 550 Hz and wavelength 0.5 m?

A: frequency (f) =550 Hz  wavelength (λ) = 0.5 m?

Q: What is the speed of a water wave of frequency 2 HZ and wavelength 2.0 m?

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Q: 01 IU lub quCJLIONS (De sure tU SHUW Your Wörk) 1. How does the fundamental resonant frequency of a…

A: As per guidelines for multiple questions, the first question has been answered.

Q: Using a spectrum analyzer, we could determine the observed frequency when the car was driving away…

A: Using Dopplers effect formula given in solution

Q: Suppose the temperature is right for sound to have a speed of 345 meters/second. The wavelength of a…

A: Data we have speed of the wave,v=345m/s frequency of the wave,f=115Hz to find the wavelength,λ=?

Q: When you listen to a radio, why do you hear only one station at a time rather than hearing all…

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Q: Determine the speed of sound in the air [m/s²] where the temperature is -55.0°F If a 256vps tuning…

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Q: A sound level of 60 dB is measured at a distance of 40 m from a lion when it roars. What sound level…

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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: How many times greater is the intensity of sound from a concert speaker at a distance of 10 meters…

A: we know that  intensity of sound is inversely  proportional to the square of distance I  α  1/ r2…

Q: What two wave properties most directly impact our ability to hear a sound? (You must select both…

A: When an object vibrates, the air surrounding it also vibrates resulting in the formation of sound.…

Q: Rank in order, from largest to smallest, the wavelengths λ1 to λ3 for sound waves having frequencies…

A: Relation for wavelength and frequency

Q: If a plane is heading towards you, the sound waves, emanating from the plane, that reach you will…

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Q: A short blast is emitted somewhere beteeen two reflecting cliffs. Two echos are heard, once at 0.6…

A: Write the given values with suitable variables. t1=0.6 st2=0.9 sv=330 m/s Here, t1, t2, and v are…

Q: How close does the lightning have to strike for you to hear it 2.5 s after it strikes? Round to two…

A: Given : Time (t) = 2.5 s

Q: What is the fundamental frequency of a musical instrument if the frequency of the 9 overtone is 240…

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Q: 4. Jet engines typically emit sound over a wide spectrum of frequencies, with the maximum sound…

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Q: What is the fundamental frequency of a musical instrument if the frequency of the 7 ^ (th) overtone…

A: Given  Frequency of the 7 ^ (th) overtone is f8=  240 Hz What is the fundamental frequency of a…

Q: A dolphin sends out a series of clicks to find out if there are fish nearby. The velocity of sound…

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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: What will happen when two sound waves of slightly different frequencies occur at the same time? How…

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Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.