A stereo speaker is placed between two observers who are 36 m apart, along the line connecting them. If one observer records an intensity level of 60 dB, and the other records an intensity level of 80 dB, how far is the speaker from each observer?

Q: A student attaches a f = 3.5 kHz oscillator to one end of a metal rail of length L = 19 m. The…

A: Given information:The length of the rail (l) = 19 mTime taken to by sound wave to travel the length…

Q: The low-frequency speaker of a stereo set has a surface area of 0.06 m2 and produces 1 W of…

A: Given :      Surface area, A1  = 0.06 m 2      Power, P = 1 W     Intensity, I = 0.24 Wm2

Q: The resultant wave function of two waves traveling in the same direction on a string is given by…

A:

Q: A stereo speaker is placed between two observers who are 38 m apart, along the line connecting them.…

A: Assume the closer observer is at distance r1 from the stereo speaker and the other observer is at…

Q: If a plane is flying at a speed so that the apex half-angle of its shock wave is 30 degrees. What is…

A: The speed of the sound,

Q: An 8 hour exposure to a sound intensity level of 95.0 dB may cause hearing damage. What energy in…

A: Given Data The exposure of the sound is upto time period ∆t = 8 hr. The intensity level of the sound…

Q: A weather emergency siren is mounted on a tower, 189 m above the ground. On one hand, it would be a…

A: Height of siren above ground (h)=189 m Intensity level of sound from the siren in dB (dB)=106 dB…

Q: Sound wave is passed through the loudspeaker so that the sound intensity increased by Lp=50 dB. How…

A: Given: Sound wave is passed through the loudspeaker so that the sound intensity increased by Lp=50…

Q: A stereo speaker is placed between two observers who are 36.0 m apart, along the line connecting…

A: Let I1 be the intensity of the sound of speaker to the first observer, and I2 be the intensity of…

Q: A sound wave having a frequency of 253 Hz travels through air at 20 °C. The decibel level at a…

A: Given  Distance r1=32.2 m β1=77.1 dB r2=32.2-14.1=18.1 m

Q: Two small speakers, 0.690 m apart, are facing in the same direction. They are driven by one 676 Hz…

A: Part 1) Draw the graph for determining the position of the speaker and listener. Here r1 signifies…

Q: A hiker shouts toward a cliff which is 360m away and hears his echo 2 seconds later. What is the…

A: solution: Given that d = 360 m  t =2 s wavelength = 0.6 Thi

Q: A microphone emits sounf with 24.8 W uniformly in every direction. A listener hears the sound at…

A: Given : Power (P) = 24.8 W Distance (r) = 5 m

Q: A point source broadcasts sound into a uniform medium. If the intensity at a distance r is I, by…

A: The mathematical relationship between the intensity of sound and distance is referred to as an…

Q: A sound wave radiates from a source uniformly in all directions. If the power of the sound source is…

A:

Q: A very loud train whistle has an acoustic power output of 100 W. If the sound energy spreads out…

A:

Q: determine the reflected, R, and transmitted, T ratios for a 10-MHz ultrasound propagating from…

A: Given:

Q: During a conversation, the power (P) of your voice is 1.6×10−71.6×10−7 W. What intensity (I) of the…

A:

Q: Determine the energy absorbed by the eardrum in 3.0 min if it has an area of 0.600 x 10^-4 m2 where…

A:

Q: A 3,440-Hz pure tone is played on a stereo in an open field. A person stands at a point that is 5 m…

A: Given, A 3,440-Hz pure tone is played on a stereo in an open field person stands at a point that is…

Q: At what frequency does the prankster hear the yell?

A:

Q: At a height of ten meters above the surface of a freshwater lake, a sound pulse is generated. The…

A: Consider the speed of sound in air be va, the speed of sound in water be vw, the depth of lake be d,…

Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…

A:

Q: The average depth of penetration of an ultra-sound wave of the frequency f = 800 kHz in tissue is 4…

A: Given The initial intensity of the wave is I0=10 W/m2. The skin depth or average depth of…

Q: A person shouting at the top of his lungs emits about 1.0 W of energy as sound waves. Match the…

A: Given: The power of the sound waves emitted by the person shouting: P = 1.0 W.

Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

A:

Q: A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the…

A: Given :- n=500 hz, d=450m Introduction:- The time interval between two successive compressions is…

Q: A student wants to establish a standing wave on a wire 2 m long clamped at both ends. If the wave…

A: A stationary wave or standing wave is a wave whose maximum amplitude at any point is constant with…

Q: A student wants to establish a standing wave on a wire 1.8 m long clamped at both ends. If the wave…

A: The minimum frequency of fundamental mode (fmin) of a standing wave on a string tied at both ends…

Q: At what speed is an ambulance coming towards you if the actual and apparent frequencies are 10 and…

A: Actual Frequency, n= 10 HzApparent frequency , na= 12 HzSpeed of sound , v= 330 m/sobserver's speed,…

Q: low-frequency speaker of a stereo set produces 10.0 W of acoustical power. If the speaker projects…

A: Given: The power of the speaker is 10 W. The speaker intensity is 80 dB.

Q: A sound wave travels through air at 20 °C. The decibel level at a distance of 19.4 m from the source…

A:

Q: If a human ear canal can be thought of as resembling an organ pipe, closed at one end, that…

A:

Q: A loud speaker on a tall pole broadcast sound waves equally in all directions. If the sound output…

A:

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

A:

Q: A bat emits ultrasonic sound of frequency 1000Hz in air. If this sound meets water surface , What is…

A: (a) Wavelength of reflected sound is,

Q: A microphone receiving a pure sound tone feeds an oscilloscope, producing a wave on its screen. If…

A: Given:  I = 2 x 10-5 W/m2 Amplitude increases by 3 %

Q: The power output of a certain public address speaker is 5.1 W. Suppose it broadcasts equally in all…

A: Given value--- output power = 5.1 W. beta = 120 dB. We have to find--- At what distance (in cm)…

Q: Assume the mostly infrared radiation from a heat lamp acts like a continuous wave with wavelength of…

A:

Q: An amplitude modulated wave is represented by the expression vm = 5(1+0.6 cos 6280r) sin(211x10*r)…

A:

Q: A rock group is playing in a bar sound emerging from the door spreads and uniformally in all…

A: Intensity is defined as the power carried by sound waves per unit area in a direction perpendicular…

Q: A weather emergency siren is mounted on a tower, 153 m above the ground. On one hand, it would be a…

A: R=153 m   dB=101

Q: A student wants to establish a standing wave on a wire 3 m long clamped at both ends. If the wave…

A: Given  Standing wave on a wire is 3m and speed is 72 m/s Length of the wire, l = 3 m Speed of the…

Q: The power output of a certain public address speaker is 8.8 W. Suppose it broadcasts equally in all…

A:

Q: | In a loudspeaker, an electromagnetic coil rapidly drives a paper cone back and forth, sending out…

A: Given:frequency of the cone, f = 1.2 kHzamplitude of the wave, A = 3.5 μm = 3.5×10−6 mloudspeaker…

Q: The power output of a certain public address speaker is 3.7 W.  Suppose it broadcasts equally in all…

A:

Q: A student wants to establish a standing wave on a wire 3 m long clamped at both ends. If the wave…

A: The velocity of a wave is defined as the product of the wavelength of the wave and the frequency 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.