A person stands in an open space listening to the sound from two speakers (Figure1). The speakers are driven from the same source and produce sound in phase witha frequency 423 Hz. The speakers are 3.00 m apart and a person stands at1.00 m in front of S, so that the line joining X and Si is perpendicular to the linejoining Si and S2. The speed of sound in air is 337 m/s. x=1.00 m 3.00 m Figure 1: Diagrammatic representation of a person standing in an open space inposition X listening to sound from two speakers, Si and S2. The speakers are3.00 m apart and the person is 1.00 m in front of the first speaker. The linebetween Si and S2 is perpendicular to the line between Si and X Part 1) What is the path difference between sound coming from speaker Si and soundcoming from speaker S,? Path difference 10 Part 2) What is the phase difference between the sound coming from Si and S,? Give anumber in radians between 0 and 2π. Phase difference = Part 3) radians The person (starting at X ) now starts to walk away from the speaker Si along theline which is perpendicular to the line joining Si and S2. How far from Si will thenerson he when thev hear the first maximim in sound intensitv?
理解问题A person stands in an open space listening to the sound from two speakers (Figure1). The speakers are driven from the same source and produce sound in phase witha frequency 423 Hz. The speakers are 3.00 m apart and a person stands at1.00 m in front of S, so that the line joining X and Si is perpendicular to the linejoining Si and S2. The speed of sound in air is 337 m/s. x=1.00 m 3.00 m Figure 1: Diagrammatic representation of a person standing in an open space inposition X listening to sound from two speakers, Si and S2. The speakers are3.00 m apart and the person is 1.00 m in front of the first speaker. The linebetween Si and S2 is perpendicular to the line between Si and X Part 1) What is the path difference between sound coming from speaker Si and soundcoming from speaker S,? Path difference 10 Part 2) What is the phase difference between the sound coming from Si and S,? Give anumber in radians between 0 and 2π. Phase difference = Part 3) radians The person (starting at X ) now starts to walk away from the speaker Si along theline which is perpendicular to the line joining Si and S2. How far from Si will thenerson he when thev hear the first maximim in sound intensitv?
已完成理解「A person stands in an open space listening to the sound from two speakers (Figure1). The speakers are driven from the same source and produce sound in phase witha frequency 423 Hz. The speakers are 3.00 m apart and a person stands at1.00 m in front of S, so that the line joining X and Si is perpendicular to the linejoining Si and S2. The speed of sound in air is 337 m/s. x=1.00 m 3.00 m Figure 1: Diagrammatic representation of a person standing in an open space inposition X listening to sound from two speakers, Si and S2. The speakers are3.00 m apart and the person is 1.00 m in front of the first speaker. The linebetween Si and S2 is perpendicular to the line between Si and X Part 1) What is the path difference between sound coming from speaker Si and soundcoming from speaker S,? Path difference 10 Part 2) What is the phase difference between the sound coming from Si and S,? Give anumber in radians between 0 and 2π. Phase difference = Part 3) radians The person (starting at X ) now starts to walk away from the speaker Si along theline which is perpendicular to the line joining Si and S2. How far from Si will thenerson he when thev hear the first maximim in sound intensitv?」
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