A sound source A and a reflecting surface B move directly toward each other. Relative to the air, the speed of source A is 29.9 m/s, the speed of surface B is 65.8 m/s, and the speed of sound is 329 m/s. The source emits waves at frequency 1200 Hz as measured in the source frame. In the reflector frame, what are the (a) frequency and (b) wavelength of the arriving sound waves? In the source frame, what are the (c) frequency and (d) wavelength of the sound waves reflected back to the source?

Q: Two speakers (A and B) lie on the y-axis, 4.0m apart. They emit exactly the same 280 Hz tone in…

A: speed of the sound        v = 340 m/s Ferquncy (f) = 280 Hz

Q: we are moving away from a stationary cell phone tower at 25 m/s. If the frequency emitted by the…

A:

Q: A sound wave moves through a medium with density 480kg/m^3 when it encounters a medium with density…

A:

Q: Two sound waves, from two different sources with the same frequency, 665 Hz, travel in the same…

A: We need to find the phase difference between the two waves from the sources reaching the given…

Q: In the figure, a French submarine and a U.S. submarine move toward each other during maneuvers in…

A: The French sub moves at a speed of vF=51.0 km/hThe U.S sub moves at a speed of vUS=73.00…

Q: A tuning fork generates sound waves with a frequency of 230 Hz. The waves travel in opposite…

A: Given values, frequency, f=230 Hz Length of hallway, L=40 m speed of sound, v=343 m/s Distance of…

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

A:

Q: Two progressive waves y1(x, t) = A sin(2π/λ (x) − ωt) and y2(x, t) = A sin(2π/λ (x) − ωt −π/2)…

A: Let A1 and A2 be defined as the amplitude of the two interfering waves. Therefore,…

Q: Two sinusoidal waves travelling in the same direction with the same amplitude, wavelength, and…

A: Consider two sinusoidal waves given by, y1=Asinkx-ωty2=Asinkx-ωt+ϕ

Q: You are picking up your partner from a mall.  Though you can see your partner, your partner cannot…

A:

Q: Two loudspeakers produce the same pure-tone sound (that is, same frequency). A sound detector is…

A: GIVEN: distance of sound detector from loudspeakers (l1) = 5m, l2 = 5.40 m speed of sound (v) =…

Q: A police car is driving with speed v_p towards a wall and uses a siren with frequency f_s. The sound…

A: Scenario : A police car uses a siren and is moving towards a wall and sound waves are reflected by…

Q: Two progressive waves y¡ = A sin(4x – ot) and y2 = A sin( 4 x – ot – 5) travel in the same…

A: on interference the resultant wave is gven by,y=y1+y2y=A sin(2πλx-ωt)  + A sin(2πλx-ωt-π2)so,y= 2 A…

Q: Two loudspeakers, 1.0 m apart, emit sound waves with the same frequency along the positive x-axis.…

A:

Q: Two identical sinusoidal waves with wavelengths of 1.5 m travel in the same direction at a speed of…

A: Standing waves are produced whenever two waves of identical frequency interfere with one another…

Q: Four sound waves are to be sent through the same tube of air, in the same direction:…

A: Solution- given four sound waves are to be sent through the same tube of air,in the same direction.

Q: A 38.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at…

A: The frequency of the sound wave is f=38.0 Hz The sound intensity level is L=60 dB The density of air…

Q: A loudspeaker emits sound waves isotropically (uniformly in all directions). The average acoustic…

A: The intensity is defined as the power delivered per unit area, as the the loudspeaker is emitting…

Q: Two small speakers, 0.680 m apart, are facing in the same direction. They are driven by one 666 Hz…

A: Given data: Distance between the speaker, d=0.680 m Frequency of each speaker, f=666 Hz Speed of…

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.