You live along the flight path of planes coming in for a landing at the airport. The intensity of sound waves from a plane's engines is 4.0  10-7 W/m2 when the plane is at an altitude of 10000 m.A. What is the power of the sound waves emitted by the engines (assuming the sound travels equally in all directions)?P =  _______ WB. What is the intensity of the sound waves emitted by the engines when the plane is at an elevation of 100 m?I =  ________ W/m2

Q: At 25 C, sound can travel 100 meters across a football field in 0.29 seconds. Determine the velocity…

A: Given The distance travel by sound is d = 100 m. The time taken by the sound is t = 0.29 s. The…

Q: The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz.…

A: Since, you have asked multiple questions we will answer the first question for you, kindly post the…

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Q: A police car is moving at a speed of 8.94 m/s, its siren emits a sinu￾ soidal wave with frequency…

A: velocity of source of sound (police car)= vs = 8.94 m/s frequency f =500 HZ temperature t=24 degree…

Q: a) Compute the wavelength in air of ultrasound with a frequency of 44 kHz if the speed of sound is…

A: Part A. use the following relation v=fλ here v is the speed of ultrasound wave f is the frequency λ…

Q: Two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the…

A: The equation for a standing wave is usually given by Here, the given standing wave has a wave…

Q: The musical note "A" creates a sound wave that can be modeled by the function…

A: Given ,                         f(x)= sin(880πx) ,   where             x represent time in seconds…

Q: A  progressive wave travelling in the x-direction is represented by the following equation:   y = A…

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Q: The velocity of sound in air is approximately 330 m/s. a) Given that, what is the frequency of a…

A: a )  Given :- V= 330 m/s λ = 16.5 m V = f * λ 330 = f * 16.5 f = 330/16.5 f= 20 Hz frequency of…

Q: The intensity of the sound wave from a jet airplane as it is taking off is 100 W/m at a distance of…

A:

Q: A transverse wave moves from a medium A to a medium B. In medium A, the velocity of the transverse…

A: v1 = 500 m/sλ1 = 5 mv2 = 600 m/sλ2 = ?f2 = ?

Q: A bat flying at 5.20 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz…

A: speed of bat = 5.2 m/s frequency emitted = 39.8 KHzfrequency recieved by bat = 40.6 KHzspeed of…

Q: A SONAR system fixed in a submarine operates at a frequency 40.0 kHz. An enemy submarine moves…

A: Calculating the frequncy reflected by the enemey submarine:Note: This frequncy will not be recieved…

Q: A guitar string transmits waves at 509 m/s. To create a 491 Hz note, to what length should the…

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Q: A train is approaching a signal tower at a speed of 40 m/s. The train engineer sounds the 1000 Hz…

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Q: A student standing in a canyon yells "echo" and her voice produces a sound wave of the frequency of…

A: given values; λ= wavelength of soundd= distance from wall to studentf=0.54 kHz=540 Hzt= 4.8 sv= 328…

Q: A train is moving parallel to a highway with a constant speed of 15.0 m/s. A car is traveling in the…

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Q: An ambulance traveling eastbound at 124.0 km/h with sirens blaring at frequency of 6.00 x 102 Hz…

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Q: The output power of a public speaker is 6 W. Assume that it transmits equally in all directions. a)…

A: Given:-  The output power of a public speaker is 6 W  Assume that it transmits equally in all…

Q: A laser beam has intensity I0.a. What is the intensity, in terms of I0, if a lens focuses the laser…

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Q: A 5.0 W point source emits sound waves isotropically. Assuming the energy of the waves is conserved,…

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Q: The siren of a fire engine that is driving northward at 37.0 m/s emits a sound of frequency 2080 Hz.…

A: Given data: The speed of the fire engine, vs =37.0 m/s. The frequency of the sound emitted by the…

Q: A student takes a 30.00 - m - long string and attaches one end to the wall in the physics lab . The…

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Q: When a wave encounters a free boundary, then what is the angle between the incident and reflected…

A: SOlution: reflection of wave from the free boundary

Q: A ship mapping the depth of the ocean emits a sound of 30.2 kHz. The sound travels to the ocean…

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Q: Two students are standing the same distance from the source of the sound. The first student receives…

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Q: With what frequency do the waves hit the front of a boat when the boat is moving westward at 1.0…

A: As you want only (b) First of all, as we know, Frequency=velocityλ

Q: an be produced in the tube? a.    2 b.    3 c.    4 d.    5 e.    6 f.    7 g.    8 h.    9 i.…

A: a. Consider the expression for frequency as:     f =nV2L     where, n is an integer…

Q: A traveling wave is described by the equaion that follows.  D(x,t) = 99.4sin(0.76x-50t), where x is…

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Q: 5. A sound wave is produced in air, with a frequency of 200 Hz. (The speed of sound in air is around…

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Q: The intensity of the sound wave from a jet airplane as it is taking off is 100 W/m2 at a distance of…

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Q: Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is…

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Q: Two submarines are underwater and approaching each other head-on. Sub A has a speed of 12.6 m/s and…

A: Given: Speed of submarine A, VA=12.6 m/s Speed of submarine B, VB=8.99 m/s The source ( submarine A…

Q: The total power consumption by all humans on earth is approximately 1013 W. Let’s compare this to…

A: Given data Total power consumption of human, PE=1013 W Intensity of radiation from sun, I=1380 W/m2…

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

A: For speaker A: The power of the sound emitted by speaker A is PA= 1.00 mW=1.00×10-3 W The distance…

Q: The intensity of sunlight that reaches Earth’s atmosphere is 1348 W/m2. What is the intensity of the…

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Q: wave is described by the following equation y (x,t) = 3 sin (36t + 0.018x + �4 ). What is your…

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Q: Ocean waves are traveling to the east at 3.4 m/s with a distance of 19 m between crests. (a) With…

A: Given that  Wave speed - 3.4 m/s Wavelength = 19 m Question -- Frequency of wave = ?

Q: The area of a typical eardrum is about 5.00 x 10-5 m2. (a) Calculate the average sound power…

A: Given- Area of a surface drum (A) = 5 x 10-5 m2 Intensity of sound (I) = 1 w/m2

Q: A typical adult ear has a surface area of 2.32 x 103 m². The sound intensity during a normal…

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Q: How much power the wave may carry?

A: Mass of wire = m =0.5 g = 0.0005 kg Length of wire =L = 30 cm = 0.30 m Mass per unit length  = û=…

Q: bat flying in a cave emits a sound pulse and receives an echo in 1 second. Using a speed of sound of…

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Q: Co A bat flies toward a moth at speed 7.5 m/s while the moth is flying toward the bat at speed 5.0…

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Q: A wave is described by the equation: with t in seconds and x in metres. (i) (ii) y(x, t) = 0.6…

A: The given equation for wave, y(x,t)=0.6sin[(2t-6x)+π6] A standard wave equation is of the form,…

Electromagnetic Waves

Electromagnetic waves are waves that consist of magnetic field and electric field components perpendicular to each other. These field components are also perpendicular to the direction of propagation of the wave.