If the wind were blowing at 25.0m/s in the same direction you are driving, what frequency would you hear
Q: The horn of a train has a frequency of 375Hz. If the train is moving away from you at 38m/x, then…
A: Using Doppler effect, when the source is moving away from the person,
Q: I blow into the lid of an empty bottle to make music. The bottle is 0.27 m deep and sound velocity…
A: Given, Length of bottle l = 0.27 m Velocity of sound v = 331 m/s We know the expression frequency…
Q: A sound wave is transmitted through the water from a submarine and is reflected of another submarine…
A:
Q: The warning tag on a lawn mower states that it produces noise at a level of 95.0 dB. What is this in…
A:
Q: By what factor k must the sound intensity be increased to increase the sound intensity level by 12.9…
A: Given Data, The increment in sound intensity level (∆β)=12.9 dB
Q: Air temperature in the Sahara Desert can reach 56.0°C (about 134°F ). What is the speed of sound in…
A:
Q: in 20°C air has a pressure amplitude of 0.800 Pa. What is the intensity of the wave? (Assume the…
A: Given:- The temperature T = 20oC = 20+273 = 293 K The pressure amplitude is P = 0.800 Pa The…
Q: A source of sound has a total emitted power of 300 W. Determine the intensity a distance of 10 m…
A:
Q: e 30 m away is 100 dB. What is the sound intensity in W/m^
A: Given:- The distance d = 30 m The level of sound of jet airplane L = 100 dB Find:- The Sound…
Q: If two identical waves, each having an intensity of 1.00 W/m2 , interfere perfectly constructively,…
A:
Q: The African cicada is the world’s loudest insect, producing a sound intensity level of 107 dB at a…
A:
Q: The sound intensity at a distance of 8.5 m from a siren is 9.5 x 10^-2 W / m^2 . Determine the total…
A: The equation for the radiated power by the sound source is Power = Intensity of the sound*Area
Q: An air traffic controller on the ground detects a sound intensity of 0.113 W/m2 coming from a jet…
A: Given: I= 0.113 W/m2 P=1680 W
Q: A Doppler blood flowmeter emits ultrasound at a frequency of 5.0 MHz. What is the beat frequency…
A:
Q: The bulk modulus and the density of a liquid is B = 584 MPa and ρ = 1,027 kg/m3, respectively. What…
A: Given data: bulk modulus B = 584 MPa. Density of liquid (ρ0) =1027 kg/m3.
Q: A sound wave in air has a frequnecy of 276 Hz and travels with a speed of 341 m/s. How far apart are…
A: Here the question is to find the distance between wave crests.Distance between wave crests is equal…
Q: What sound intensity level in dB is produced by earphones that create an intensity of 4.00×10−2 W/m2…
A: Given: I = 4 x 10-2 W/m2
Q: Two trains approach each other, each train traveling at 30 m/s. The engineer on one train sounds…
A: Given: v1 = v2 = 30 m/s, f1 = 177 Hz, Vs = 340 m/s
Q: The warning tag on a lawn mower states that it produces noise at a level of 93.0 dB. What is this in…
A:
Q: The windpipe of a typical whooping crane is about 4.6 ft long. What is the lowest resonant frequency…
A:
Q: A sound wave has a frequency of 632 Hz in air and a wavelength of 0.51 m. What is the temperature of…
A: Given, frequency = 632 Hz wavelength = 0.51 m We know, c is the speed of sound
Q: A car traveling north at 21 m>s sounds its 480-Hz horn. A bicyclist travels south on thesame road…
A: The bicyclist is moving towards the car. It is given that, vs=343 m/sfo=480 Hzvc=21 m/svb=6.7 m/s
Q: A bottlenose dolphin emits frequencies of 130.0 kHz for the purpose of locating food. If the dolphin…
A: Given, Frequency,f=130 kHz=1.3×105Hz Time to return,t=2.4s Speed of sound in water, v=1500 m/s
Q: Bats use sound waves to catch insects. Bats can detect frequencies up to 116 kHz. If the sound waves…
A: a. Given data The frequency detected by the bats is given as f = 116 kHz. The speed of the sound…
Q: The sound intensity from a jack hammer breaking concrete is 2.0 W/m2 at a distance of 2.0 m from the…
A: It is given that,
Q: A sound source emits 26.0 W of acoustical power spread equally in all directions. What is the sound…
A: Power emitted by source = P = 26 wDistance of point from source = r = 31.5 m
Q: A source emits sound uniformly in all directions. There are no reflections of the sound. At a…
A: The distance between the point and the source,
Q: The sound intensity 9 m from an isotropically radiating point source is 0.78 W/m². What is the power…
A: Since the point is 9 m from the point source, so, the area of sphere covered is A =πr2 ⇒4×π×92 =…
Q: A bungee jumper jumps from rest and screams with a frequency of 451 Hz. The air temperature is 20…
A:
Q: The following sound waves have what velocity? (a)f-314 Hz, 2= 168 m m/s (b)f-314.0 Hz, 2 = 7.70 m…
A: We know, Velocity is the product of frequency and wavelength
Q: What frequency of sound traveling in air at 208C has a wavelength equal to 1.7 m, the average height…
A:
Q: Doppler blood flow unit emits ultrasound at 4.6 MHz. What is the frequency shift of the ultrasound…
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Q: An elephant produces a 10 Hz sound wave. Assuming the speed of sound in air is 345 m/s, determine…
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Q: The average sound of traffic on a busy street is 62.2 W. What intensity of the sound is heard by…
A:
Q: As a jet plane takes off, at 5.0 m the sound wave intensity is 100 W/m². An observer stands 120 m…
A: The given data we have: Sound intensity at 5 m from the plane: 100 W/m2 The objective is to…
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If the wind were blowing at 25.0m/s in the same direction you are driving, what frequency would you hear?
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- Ultrasound reflected from an oncoming bloodstream that is moving at 33.0 cm/s is mixed with the original frequency of 1.50 MHz to produce beats. What is the beat frequency (in Hz)?The warning tag on a lawn mower states that it produces noise at a level of 99.0 dB. What is this in W/m2?The sound intensity 50 m from a wailing tornado siren is 0.10 W/m2. What is the sound intensity level 300 m from the siren?
- A bungee jumper jumps from rest and screams with a frequency of 403 Hz. The air temperature is 20 °C. What is the frequency heard by the people on the ground below when she has fallen a distance of 14.3 m? Assume that the bungee cord has not yet taken effect, so she is in free-fall. Number UnitsThe African cicada is the world’s loudest insect, producing a sound intensity level of 107 dB at a distance of 0.50 m. What is the intensity of its sound (in W/m2) as heard by someone standing 3.0 m away?While sitting next to a road on a calm, warm 27.9ºC evening, you see an ambulance's lights flashing in the distance coming towards you. You hear a frequency of 150 Hz (you have a very keen ear!). However, you know that ambulances have sirens that emit sound at 140 Hz. How fast is the ambulance approaching you, in m/s
- At a distance of 2.00 m from a point source of sound, the intensity level is 80.0 dB. What will be the intensity level at a distance of 4.00 m from this source? The lowest detectable intensity is 1x10-12 W/m2.What is the intensity level in decibels of a sound with intensity 10-3 W/m2? The threshold of human hearing is 1.0 × 10-12 W/m2.The sound intensity of a conversation at a distance of 6.0 m is 1.7 x 10^-7 W/m2. Determine the intensity at a distance of 5.0 m. Assume that the sound propagates uniformly in all directions.
- The higher frequency limit for human hearing is 23.9 kHz. If the air temperature is 12.2 °C, the corresponding wavelength (mm; millimeter) of the sound is:A dolphin is swimming at 10 metres per second towards a scuba diver. The dolphin is emitting a ‘welcome’cry which has a frequency of 2980 Hz. What is the frequency that the diver hears underwater?The speed of sound in air is 340 m/s, and the density of air is 1.2 kg/m³. If the displacement amplitude of a 440-Hz sound wave is 10 μm, what is the intensity of the wave? O 0.16 W/m² O 0.32 W/m² O 12 W/m² O 16 W/m² O 32 W/m²