A whistle blower moves toward you at 10 m/sec blowing a 500 Hz whistle,but you move away from him at 20 m/sec. What is the frequency that you hear the whistle?

Q: A friend of yours is loudly singing a single note at 426 Hz while racing toward you at 13 m/s on a…

A: Given that A friend of yours is loudly singing a single note at 426 Hz while racing toward you at 13…

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: At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from…

A: Given Data Sound level at a distance r1=1.50 m is B1=115 dB   We have to find the distance where the…

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: As a fire engine is racing down a street towards a bystander what does he hear?

A: For this ,we have to know about Doppler's  effect . i .e. The Change in frequency of source sound…

Q: You are at an outdoor concert with a wind blowing at 10 m/s from the performers toward you. Is the…

A: Given : Rate of blowing wind = 10 m/s To find whether the sound is doppler-shifted or not

Q: The sound waves travel with speed 568 m/s. If is wavelength is 8 cm

A: We know that the relationship between the  wavelength and frequency is given as  λ= vf where v is…

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: A bat chirps as it flies toward a wall. Is the frequency of the echoed chirps it receives higher,…

A: The Doppler Effect, describes the changes in frequency of any kind of sound or light wave produced…

Q: A 1.6 meter long rope creates a wave which travels at 2.4 m/s and has a frequency of 1.5 Hz. What…

A:

Q: A piano plays sound waves with frequencies 125 Hz, 640 Hz and 2000 Hz. Name the type of sound waves…

A:

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: A car is traveling at 100.80 kilometres per hour towards you as it is honking its horn. You hear the…

A: Converting 100.80 km/hr into m/s gives,

Q: what is the speed of water waves of frequency 2Hz and wavelength 1.5m

A:

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

A:

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: Two cars traveling with the same speed move directly away from one another. One car sounds a horn…

A:

Q: Suppose that a water wave coming into a dock has a speed of 1.5 m/s and a wavelength of 2 m. With…

A: Given,

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: As part of a college physics lab. A car that is giving off a sound with a frequency of 350 Hz, is…

A:

Q: A person sitting on a pier observes incoming waves with a distance of 2.5 m between the crests. If…

A:

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: A passenger on a train approaching a station a 29 m/s hears a bell ringing in the station. Take the…

A:

Q: A 1.5 Hz continuous wave travels on a Slinky. If the wavelength is 2 m, what is the speed of waves…

A:

Q: By tapping his finger on the surface of a pond, Tom sends out waves at a frequency of 3 Hz. If the…

A:

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: Shaking a slinky with a wave speed = 150 m/s at different frequencies will show what kind of…

A:

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

A:

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

A:

Q: The pan flute is a musical instrument consisting of a number of closed-end tubes of different…

A:

Q: How much more intense is sound at 40 dB than sound at 0 dB?

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

A:

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

A:

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 violin string is 50 cm long and has a fundamental frequency of 440 Hz. What is the speed of waves…

A: The allowed frequencies of a transverse wave on a string is given by:f=nv2Lwhere n is the mode of…

Q: What type of wave is a sound wave?

A:

Q: What is the speed of sound at a temperature of 300 K?

A: Given data The temperature is given as T = 300 K.   The mathematical expression to calculate the…

Wave Motion

A wave motion is defined as the propagation of disturbances or transfer of energy and momentum from the state of rest or equilibrium to another point in a medium without any actual transfer of matter between them. In a simple explanation, it is the propagation of energy through a medium that is produced due to the repeated vibrations of the particles. Common things we see day to day like waves on water oscillation of a pendulum or bell, light wave, and all the subatomic particles exhibiting wavelike properties. The propagation of waves depends on the medium and their properties. The wave function is the disturbance that produces waves as a function of time. This disturbance oscillates periodically with a fixed frequency and wavelength. There are linear wave motion and non-linear wave motion based on their propagation, motion, and time period where linear wave motion is like sinusoidal waves and non-linear wave motion like a wave motion that gets interrupted in the middle of their propagation.