Two Loudspeakers in an Open Field Imagine you are in an open field where two lou

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Two Loudspeakers in an Open Field Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Two Loudspeakers in an Open Field Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. Two Loudspeakers in an Open Field Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part A If you are 3.00 m from speaker A directly to your right and 3.50 m from speaker B directly to your left, will the sound that you hear be louder than the sound you would hear if only one speaker were in use? yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. yes no yes no yes no SubmitHintsMy AnswersGive UpReview Part Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Correct Because the path difference is equal to the wavelength of the sound, the sound originating at the two speakers will interfere constructively at your location and you will perceive a louder sound. Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Part B What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? The forward direction is defined as being perpendicular to a line joining the two speakers and you start walking from the line that joins the two speakers. Express your answers in meters to three significant figures. d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again d = ?
m d = ?
m SubmitHintsMy AnswersGive UpReview Part Try Again Try Again Try Again yes no

Explanation / Answer

well since you're not standing in the centre of the two, we assume you're not standing on the central antinode and assume therefore that you're standing in a node i.e. the waves have arrived out of phase and have cancelled the amplitudes out i.e. there is quiet/a quieter sound

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