Two cars approach each other, each moving with a speed of 50 m/s, when one car starts to beep its horn at a frequency of 475HZ. What is the wavelength of the horn as heard by the other driver? 0.45 m 0.70 m O 0.62 m O 0.54 m
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- Two eagles fly directly toward one another, the first at 15.0 m/s and the second at 26.0 m/s. Both screech, the first one emitting a frequency of 3300 Hz and the second one emitting a frequency of 3800 Hz. What frequencies (in Hz) do they receive if the speed of sound is 330 m/s? first eagle Hz second eagle HzA convertible moves toward you and then passes you; all the while, its loudspeakers are producing a sound. The speed of the car is a constant 8.93 m/s, and the speed of sound is 342 m/s. What is the ratio of the frequency you hear while the car is approaching to the frequency you hear while the car is moving away? Number Units > #3 C E m/s 7 8 5 % JU 6 וום & e t y u Apr 30 5 6 01. A sound wave propagating in air has a frequency of 220 Hz. What is its wavelength? (The speed of sound in air is 343 m/s.) 0.641 m 4.55 mm 220 m 343 m 1.56 m
- A pipe with one closed end vibrates with standing waves at the second harmonic. It produces a C- note that has a frequency of 264 Hz. How long is the pipe? The speed of sound in air is 340 m/s. 0.97 m 1.29 m 1.61 m 0.32 mTwo motors sitting near each other in a factory at slightly different rates. One runs at 805.0 rpm and the other at 775.0 rpm. You hear the combined sound intensity from the motors increase and then decrease periodically due to wave interference. What is the period of beats in seconds?A pier stretches from the coastline out into the sea a distance of 180 m. Waves on the sea move past the pier as they head toward the shore. The distance between the crests of the waves is 15 m, and the wave crests travel from the end of the pier to the shore in 24 seconds. What is the frequency of the waves? O 0.3 Hz 0.4 Hz O 0.5 Hz O 0.6 Hz
- 3. A bystander hears a siren vary in frequency from 598 Hz to 364 Hz as a fire truck approaches, passes by, and moves away on a straight street. What is the speed of the truck? (Take the speed of sound in air to be 343 m/s.) m/s f60 ss f60 s ssfo ssf60 sTwo trains on separate tracks move toward each other. Train 1 has a speed of 149 km/h; train 2, a speed of 95.0 km/h. Train 2 blows its horn, emitting a frequency of 500 Hz. What is the frequency heard by the engineer on train 1?A wave with a wavelength of 6.0 cm propagates along a string with speed of 4.0 m/s. What is the speed of a wave with two times shorter wavelength, 3.0 cm , propagating on the same string? O 2.0 m/s O 4.0 m/s O 8.0 m/s O Neither of the above
- A speed boat sounds its horn while moving towards the shore at 45.2 m/s . If people on the shore think the horn frequency is 89.0 Hz , what frequency did the speed boat pilot hear? 77.3 Hz 101 Hz 78.6 Hz 103 HzA red train is stationary and a green train is moving forward away from the red train at a speed of 28 m/s. Between the trains, is a bicyclist moving towards the stationary red train at a speed of 15.3 m/s. each train has a whistle with a frequency of 349 Hz. the air temperature is 2 degrees celsius. What are the frequencies of the whistles heard by the bicyclist, coming from the green and red trains? PLEASE INCLUDE UNITS AND ROUND TO 4TH DECIMALS PLACE.Two eagles fly directly toward one another, the larger eagle at a speed of 15.0 m/s and the smaller one at a speed of 20.0 m/s. Both eagles screech, the larger emitting a screech of frequency of 3 200 Hz and the smaller one emitting a screech of frequency 3 800 Hz. The speed of sound in the air around the eagles is 330 m/s. What is the frequency of the screech heard by the larger eagle? Group of answer choices