Sound of frequency 440 Hz passes through a doorway opening that is 1.2 m wide.
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Q: The speed of sound at 0°C in open air is 331.3m/sec. At what temperature would the wavelength of a…
A: frequency = f = 440 Hz wavelength = λ = 0.82 m
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A: To solve this problem, we can use the Doppler effect formula for sound: f′=f(v+vrv+vs)Where:𝑓′…
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- A bat at rest sends out ultrasonic sound waves at 54.0 kHz and receives them returned from an object moving directly away from it at 33.0 m/s . What is the received sound frequency?Standing at a crosswalk, you hear a frequency of 570 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 488 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)an ambulance is approaching you at 22 m/s, sounding its siren at a frequency of 675 Hz? If the speed of sound is 344 m/s , what frequency do you observe? Your velocity is 0 m/s.
- Express the following in W/m² : 80 dBA sound source with a frequency of 1700 Hz moves at 50 m / s towards a wall reflector that moves away from the source at 55 m / s. If the speed of sound is 343 m / s determine the frequency that detects the source of the reflected wave.You are driving down the highway at a speed of 45 m/s when you hear the sound of a police siren that is 200 m behind you. The frequency you hear is 450 Hz. You know, however, that the actual frequency of a police siren is 425 Hz. What is the speed of the police car? Assume the speed of sound is 343 m/s.
- Sounds from the street below come through an open window measuring 0.75 m by 0.88 m.If the power of the sound is 1.2 x 10 W, what is its intensity?While running on the sidewalk at 5.2m/s , you hear an ambulance approaching you from behind. It is traveling at 27.8m/s with respect to the road. If the ambulance has a siren with a frequency of 2.30x10°Hz and the speed of sound is 343m/s , at what frequency do you hear the siren?Standing at a crosswalk, you hear a frequency of 540 Hz from the siren of an approaching ambulance. After the ambulance passes, the observed frequency of the siren is 435 Hz. Determine the ambulance's speed from these observations. (Take the speed of sound to be 343 m/s.)
- For the scenario in Question 9 with the speed of eagle 11.00 m/s, what frequency does the blackbird hear (in Hz) after the eagle passes the blackbird?A doppler flow meter uses 3.5 MHz ultrasonic waves to measure blood-flow speeds. What is the expected beat frequency if blood is flowing in large leg arteries at 2.0 cm/s directly away from the sound source.