An object is moving away from a stationary observer at a rate of 25 m/s. While moving the object is emitting a sound wave of 750 MHz What frequency does the observer hear?
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- A rocket on the ground vibrates at an audible frequency of 486 Hz. What is the frequency heard by an observer while the rocket is in flight and recedes away at 247 m/s from the stationary observer?A truck travelling west at 60 m/s sounds it's 440 hz horn as it passes a stationary observer. What frequency does the observer hear as the car approaches and recedes?A car driving by you honks to say hello. The frequency of the honk measured by the driver in the car is 256 Hz, the speed of sound is 350 m/s, and the car travels towards you at 14 m/s. What frequency will you hear from this honk?
- A stationary police car emits a sound of frequency 1200 HzHz that bounces off of a car on the highway and returns with a frequency of 1260 HzHz. The police car is right next to the highway, so the moving car is traveling directly toward or away from it. What frequency would the police car have received if it had been traveling toward the other car at 23.0 m/sm/s ?An airplane traveling at half the speed of sound emits a sound of frequency 5,000 kHz. At what frequency does a stationary listener hear the sound (a) as the plane approaches? (b) after the plane passes?You and your friend decided to test out the Doppler Effect. Your friend is in their car, driving towards you at 4.2 m/s, playing a 400 Hz test tone. You are moving towards your friend at 0.5 m/s. At what frequency do you hear this test tone? Assume the speed of sound is 340 m/s. (Recall that we set the POSITIVE x-direction as the direction from the observer to the source)
- A spectator at a parade receives an 888-Hz tone from an oncoming trumpeter who is playing an 880-Hz note. At what speed is the musician approaching if the speed of sound is 338 m/s?The siren on an ambulance is emitting a sound whose frequency is 2450 Hz. The speed of sound is 343 m/s. If the ambulance is moving toward you at a speed of 27 m/s and you are moving toward it at a speed of 14 m/s, find the wavelength and frequency of the sound you hear.AM radio signals are broadcast at frequencies between 550 kHz (kilohertz) and 1600 kHz and travel at 3 x 10^8 m/s. a) What is the range of wavelengths for those signals? b) FM frequencies range between 88 MHz (megahertz) and 108 MHz and travel at the the same speed. What is the range of the FM frequencies.
- An emergency vehicle with its siren turned on at a frequency of 790HZ, moves away from a stat ionary observer at a speed 25m/s. What frequency does the observer hear? 698 Hz O 757 Hz 735 Hz 750 HzA truck travelling west at 60 m/s sounds it's 440 hz horn as it passes an observer riding a bike traveling east at 20 m/s. What frequency does the observer hear as the car approaches?Jane is traveling west at a speed of 25 m/s. A train is traveling directly towards her with a speed of 100 m/s. The train is making a sound wave with frequency of 600 Hz. Assuming that the speed of the sound in air is 340 m/s, What frequency does Jane hear?