An ice cream truck has a speaker on it, blaring music that beckons people to come...
An ice cream truck has a speaker on it, blaring music that beckons people to come buy a frozen treat. Unfortunately, the music player is stuck, and it's continuously playing a pure, 250-Hz tone. You are standing by the side of the street. If that truck drives towards you at 56 miles per hour, what frequency will you hear? After passing you, what frequency will you hear?
You hear the 4000Hz music of the ice cream truck driving around your neighborhood on a warm 25⁰C day. You really want ice cream, but your wallet is nowhere to be found. You locate it after a few minutes of frantic searching, and run out to the street, only to see that the truck already passed your house and is moving away from you at 10m/s. The music now does not sound so cheerful. What frequency of music do you...
You observe that "demented" ice cream truck phenomenon one day. When the truck is stationary nearby, it is playing a song of mostly 550 Hz. When it pulls away you observe a frequency of 543 Hz (more than enough to sound out of tune'). How fast did it pull away from you?
My answers were 2.9, 5.6, 17, but it keeps saying that the first term is wrong and that I should check significant figures. Help?? Part A You are standing 2.5 m directly in front of one of the two loudspeakers shown in the figure. They are 3.0 m apart and both are playing a 686 Hz tone in phase. (Figure 1) As you begin to walk directly away from the speaker, at what distances from the speaker do you hear...
The siren of a fire truck at rest emits at a predominant frequency of 1950 Hz. What frequency will you hear if you are at rest and the fire truck car moves at 20.5 m/s (a) toward you? The temperature of that day is 20°C so use Vsound 343 m/s. Please submit your answer with the correct number of significant figures and the corresponding units