A car is travelling away from you at 42 mph. A car horn produces a sound with a frequency of 588 Hz. Assuming the speed of sound in air is 1090 ft/s, what frequency (in Hertz) do you hear?
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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
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A: We know, Velocity is the product of frequency and wavelength
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Q: A cop car’s siren has a frequency of 750. Hz. If you are driving towards the cop’s siren at a speed…
A: Given:frequency, f = 750 Hzspeed, v = 20 m/sSpeed of sound, vs = 343 m/s Solution: Now, applying the…
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- The lower frequency limit of hearing for a particular human being is 25.3 Hz. What is the corresponding wavelength (in meters) for this frequency if the speed of sound in air is 343m / s ?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?A bat emits a sound whose frequency is 81.8 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 41.8 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the sound.
- A sound has an of intensity 2.0*10-4 W/m2 and has a sound level of 83.0 dB. If you double the intenisty how much does the sound level go up? 0.5 dB 1.0 dB 1.5 dB 2.0 dB 2.5 dB 3.0 dB 3.5 dBA hiker shouts towards a vertical cliff that is 465 m away. The echo is heard 2.75 s later. What is the speed of sound of the hiker's voice in air?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.
- A bird is flying directly toward a stationary bird- watcher and emits a frequency of 1400 Hz. The bird-watcher, however, hears a frequency of 1430 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1.30 × 10³ Hz. The bird-watcher, however, hears a frequency of 1.37 × 10³ Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?1) Determine the change in chemical energy each second required to produce this increase in electric potential energy. 2) If there are roughly 7×10^11 of these cells in the body, how much chemical energy is used in pumping sodium ions each second? 3) Estimate the fraction of a person's metabolic rate used to pump these ions. Assume the metabolic rate to be 100 W.
- Two eagles fly directly toward one another, the first at 13.5 m/s and the second at 22.5 m/s. Both screech, the first one emitting a frequency of 2950 Hz and the second one emitting a frequency of 3950 Hz. What frequency of sound, in hertz, does the first eagle hear from the second if the speed of sound is 330 m/s? What frequency of sound, in hertz, does the second eagle hear from the first if the speed of sound is 330 m/s?When poked by a spear, an operatic soprano lets out a 1169 Hz shriek. What is its wavelength (in m) if the speed of sound is 345 m/s?Ther is a sound source that produces a sound with the frequency f=737 Hz. This sound source is moving at the speed of v2= 5.8m/s and an observer is movingat the speed v1=3.2 m/s What is the frequency of the sound that the pbserver hears when the sound source and the observer are moving toward each other? Use 343 m/s for the speed of the sound in the air.