While you are sounding a tone on a toy whistle, you notice a friend running toward you. If you want her to hear the same frequency that you hear even though she is approaching, you should ______.
Q: While you are stopped at a red light, an ambulance is moving away from you at 30 m/s with its siren…
A:
Q: a. What frequency (in Hz) is received by a person watching an oncoming ambulance moving at 118 km/h…
A: *The ambulance moving at a speed is vs = 118 km/h = 32.78 m/s *The emitting frequency is f0 = 600 Hz…
Q: An ambulance moving at 35 m/s sounds its siren whose frequency is 480 Hz. A car is moving in the…
A:
Q: A baseball hits a car, breaking its window and triggering its alarm which sounds at a frequency of…
A:
Q: The power output of a trombone is 0.30 W. At what distance is the sound intensity of the trombone…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: Standing at a crosswalk, you hear a frequency of 560 Hz from the siren of an approaching ambulance…
A:
Q: Banditos are chasing a mariachi. The mariachi is in a car driving at 24 m/s while playing a note…
A: Given: Banditos is chasing mariachi. So Bandits is the observer and mariachi is the source. Speed of…
Q: For research purposes a sonic buoy is tethered to the ocean floor and emits an infrasonic pulse of…
A:
Q: An ambulance has a siren emits a sound which is sinusoidal with frequency fs = 350Hz. Assuming the…
A: Given data: Frequency of the sound wave emitted by the siren, fs=350 Hz Speed of sound in air,…
Q: You see an approaching train while standing on a railway platform. It blows its whistle, which you…
A: Given: Frequency of the source train: fs=500 [Hz] Frequency heard by stationery observer: f0=100…
Q: A whistle you use to call your hunting dog has a frequency of 42 kHz, but your dog is ignoring it.…
A: Given: frequency, f = 42 Hz Apparent frequency, f' = 40 Hz
Q: The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of…
A:
Q: A dolphin is swimming at 20.00meters per second towards a scuba diver. The dolphin is emitting a…
A: Using Doppler effect, the frequency heard by the diver can be given as
Q: A bat is flitting about in a cave, navigating via ultrasonic bleeps. Assume that the sound emission…
A: Given that The original frequency of the bat, fs=37.1kHzfs=37100Hz The velocity of the bat…
Q: The intensity level of an orchestra is 85 dB. A single violin achieves a level of 70 dB. How does…
A: We know that the general formula for the sound intensity level in decibels corresponding to…
Q: You leave a building lobby at 50 dB to go outside and encounter traffic noise that is 35 times as…
A:
Q: A sound has a high pitch and a low volume. What is probably true of this sound wave?
A: Pitch of a sound depends on the frequency of the sound. High pitch means shrill or high frequency…
Q: Residents of Hawaii are warned of the approach of a tsunami by sirens mounted on the top of towers.…
A: decibel level of sound of siren at a distance of 2 m = 128 dB
Q: b.) A sound has an initial volume of 55.0 dB. The volume suddenly increases to 87.0 dB. By what…
A: To find the factor by which the sound intensity increased, we can use the formula that relates the…
Q: The siren of a policy car at rest emits a frequency of 1600 Hz. What frequency do you detect if you…
A: The frequency of sound emitted by the source (policy car) is given as, f = 1600 Hz The speed of…
Q: Standing at a crosswalk, you hear a frequency of 560 Hz from the siren of an approaching ambulance.…
A:
Q: Two pianos each sound the same note simultaneously, but they are both out of tune. On a day when the…
A:
Q: The SR-71 “Blackbird” flies over 2,000 mph. If this planes is flying at 2,000 mph at an altitude of…
A: If the source speed is larger than the speed of sound, then the observer will not hear the sound…
Q: A car horn has a frequency of 720 Hz. In which of the following situations would you hear an average…
A: when there is relative velocity between a source and observer then the frequency of the sound change…
Q: What is the fundamental frequency for a 60 cm banjo string if the speed of waves on the string is…
A:
Q: olphin is swimming at 10 metres per second towards a scuba diver. The dolphin is emitting a…
A: doppler effect will be used here
While you are sounding a tone on a toy whistle, you notice a friend running toward you. If you want her to hear the same frequency that you hear even though she is approaching, you should ______. In your explanation include the appropriate equation
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- Two trumpets are being tuned using beats. One has a frequency of 440 Hz. When the second is played along with it, 15 beats are heard in 5.0 s. What are the possible frequencies of the second trumpet?A concert loudspeaker suspended high off the ground emits 45 W of sound power. What is the sound intensity that reaches the an audience member 80 m away from the speaker? units: How many decibels does the audience member hear? units: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.
- The two successive harmonic frequencies of a 0.45 m long sound pipe are 929 Hz and 1300 Hz. a) Is the pipe open at both ends or only at one end? b) What is the propagation speed of the wave?The air temperature is 92 degrees Fahrenheit. A truck is honking its horn as it is traveling at 30 mph away from you. The truck horn has a frequency of 1197 Hz. What is the frequency you hear the horn as having? Do not round off the term. The perceived frequency is [x] ______________________ HzA man he uses a call with a power of 200 Watts to signal to two people that he is under distress. Assuming the call emanates from the man as a point source, what would the intensity of the sound be to the one person who is 100 m away? b.) By what factor does the intensity of the sound decrease when it reaches the second person 500 m away? c.) If the call has an frequency of 4,000 Hz and the speed of sound is 344 m/s, then what is the wavelength of the sound waves produced?
- An organ pipe (closed at one end) produces a mixture of 1100 Hz and 1833 Hz. These frequencies correspond to the first and second overtones respectively. What is the frequency of the first harmonic?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.