A sound source produces a frequency of 400 Hz. The speed of the wave in the medium is 300 m/s. The source is not moving, but an observer is moving toward the source at a speed of 100 m/s. What frequency does the observer hear ? A. 133 Hz B. 266 Hz C. 300 Hz D. 533 Hz E. 633 Hz

Q: A sound wave with intensity 2 x 10 -3 W/m2 is perceived to be modestly loud. Your eardrum is 6 mm in…

A: Intensity of sound (I) = 0.002 Wm2Diameter of eardrum (d) = 6 mm

Q: A string on the violin has a length of 18 cm and a mass of 0.86 g. The fundamental frequency of the…

A: Given: Fundamental frequency, f1=1 kHz=1000 Hz Length of the string, L=18 cm=0.18 m Mass, m=0.86…

Q: 2. A car moving at 24 m/s sounds a 500 Hz horn when the temperature of the air is 26°C. A person at…

A: speed of car (u) = 24 msfrequency of horn (f) = 500 Hz Temperature of air = 26oC Speed of sound =…

Q: Two cars move toward one another, both sounding their horns (fs = 800 Hz). Car A is moving at 65 mph…

A: Determine the speed of the sound in air at the given temperature as follows. v=331 m/s1+T273° C=331…

Q: A train whistle is heard at 750Hz as the train approaches a town. The train cuts its speed in half…

A: Given:  The frequency of sound heard before slowing, f1 = 750 Hz  The frequency of sound heard after…

Q: An eagle flying at 15.5 m/s towards a stationary prey screeches at 3250 Hz. (a) What frequency, in…

A:

Q: A driver travels northbound on a highway at a speed of 26.0 m/s. A police car, traveling southbound…

A:

Q: A string on a guitar produces 431 Hz sound. How to increase the pitch of the sound produced by the…

A: Shorter the strings, higher the frequency and higher the pitch. Hence, the pitch of a string can be…

Q: A commuter train passes a passenger platform at a constant speed of 39.0 m/s. The train horn is…

A:

Q: The speed of sound increases by about 0.6 m/s for each degree Celsius when the air temperature…

A: Required :  Effect of increase in temperature on the frequency and wavelength.

Q: A 0.500-m-long brass pipe open at both ends has a fundamental frequency of 350 Hz. (a) Determine the…

A: It is given that,

Q: Susan stands on the side of the road and observes a fire truck driving at 35 m/s. The truck turns on…

A:

Q: A listener at rest (with respect to the air and the ground) hears a signal of frequency f, from a…

A: Using Doppler effect, write the expression of the observed frequency when listener is at rest.

Q: You are traveling north on a highway moving at 23 m/sec. A police car is traveling toward you going…

A: It is given that

Q: A fighter jet moving at 1200 km/h barrels towards a thrilled crowd at a local air show. The engine…

A: (a) According to the Doppler shift, the frequency of the crowd perceives, Substitute the values,

Q: A 512-Hz tuning fork is struck and placed next to a tube with a movable piston, creating a tube with…

A: The frequency, f=512 Hz   The length 1, Ln=82.50 cm   The length 2, Ln+1=115.50 cm

Q: Q17/ A stationary source has a frequency 1200 Hz, what frequency will be heard by driver of car…

A:

Q: 4. The frequency of a car horn is 400 Hz. Find (a) the wavelength of the sound, and (b) the…

A: Given, Frequency of a car horn = 400 Hz Speed of sound in air = 340 m/s

Q: The frequency of the highest note on a certain musical instrument is 2000 Hz. a. How many harmonics…

A: From the question, the value of the fundamental frequency is: Thus, the frequency of the succeeding…

Q: You are sitting on a bench and a police car approaches your location at a speed of 26m/s. The police…

A:

Q: A driver travels northbound on a highway at a speed of 26.0 m/s. A police car, traveling southbound…

A: Given- Frequency of sound fs = 2600 Hz Velocity of driver (Vd) = 26 m/s Velocity of police car (Vp)…

Q: A race car is travelling at a speed of 262 km/hr. The frequency of the engines roar is 950 Hz. The…

A:

Q: he toadfish makes use of resonance in a closed tube to produce very loud sounds. The tube is its…

A: The relation of the intensity is β=10 log(II0)

Q: 10. A trailer truck traveling east at 40.0 m/s sounds a 800 Hz horn. What is the wavelength of the…

A:

Q: A driver travels northbound on a highway at a speed of 22.0 m/s. A police car, traveling southbound…

A:

Q: A pipe 0.60 m long and closed at one end is filled with an unknown gas. The third lowest harmonic…

A: The resonant frequency of pipe of length L with only open end is given by The third lowest harmonic…

Q: A musical instrument produces a sound with a frequency of 320 Hz and a wavelength in the air of 1.15…

A:

Q: a plucked guitar string produces a sound wave that propagates through the air. The fundamental…

A:

Q: John ties a 15-m-long, 4 kg rope to a wall and stretches it out horizontally, placing it under a…

A: The string's tension is, T=4000 N The linear mass density of the rope is, μ=mL=4 kg15 m=0.267 kg/m

Q: car traveling south

A: All questions are answered below

Q: You are sitting on a bench and a police car approaches your location at a speed of 26m/s. The police…

A:

Q: A car is moving to the left at 25 m/s while a truck is moving to the right at s 20m/s. If the truck…

A:

Q: The sound level at 1.0 m from a certain talking person talking is 60 dB.  A.How far will you have to…

A:

Q: 4 What frequency is received by a person watching an oncoming ambulance moving at 110 km/h and…

A: The formula of the Doppler's effect is given by  f'=v + vov - vs f where, v is the speed of sound,…

Q: A driver travels northbound on a highway at a speed of 20.0 m/s. A police car, traveling southbound…

A:

Q: A girl is sitting near the open window of a train that is moving at a velocity of 10.00 m/s to the…

A:

Q: A stationary listener hears frequency f1 from a source moving directly toward the listener with a…

A: The Doppler frequency can be written as follow fobs = f0vsound+vobservervsound+vsource

Q: The softest sound a human ear can hear is at 0 dB (Io = 10-12 W/m2). Sounds above 130 dB cause pain.…

A:

Q: A steel wire is 5.00 m long and is stretched with a tension of 1400 N . The speed of propagation of…

A: Given data :             Length of the wire , L = 5.00 m            Tension, T = 1400 N…

Q: What are the three audible frequency ranges? Select the correct response: a.Subsonic, sonic, and…

A: Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. Waves in this range are…

Q: A sound source emits sounds of frequency 180 Hz that travel through still air at 340 m/s. This sound…

A: