Suppose you are in a square room whose side measures 10 m. Two speakers in sync, situated in two corners are giving out a single pitch of 100 Hz. Find all points in the room where one would not be able to hear anything.
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Suppose you are in a square room whose side measures 10 m. Two speakers in sync, situated in two corners are giving out a single pitch of 100 Hz. Find all points in the room where one would not be able to hear anything.
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- For testing purposes, a musical instrument manufacturing company creates a device so that when you blow into one end with your instrument, sound comes out the other end in opposite directions. A sound technician uses a whistle and generates sound waves with a frequency of 200 Hz. The waves travel in opposite directions in a sound studio, are reflected by end walls, and return. The studio is 50.0 m long and the whistle is located 14.0 m from one end. What is the phase difference (in degrees) between the reflected waves when they meet at the source of the sound? The speed of sound in air is 343 m/s.A 1,720-Hz tone is played on a stereo in an open field. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. What must the minimum wavelength be for the person to hear the tone? (Hint: because of interference, two waves add constructively or destructively. If the sound is heard the interference must be constructive. For interference to be constructive, the difference in distance must be a multiple of the wavelength. That is, the difference in distances from the speakers must be 1 wavelength, two wavelengths, three wavelengths, etc.)Two loud speakers are 3m apart. A person is listening to a single pitch at 680Hz. Theperson is along the back wall, which is reasonably far, what are two directions from the center ofthe speakers where the person would expect to have the music loud? Repeat for two directionsthat are quiet.The person is now standing at the location that is 4m directly in front of one of thespeakers. Determine whether that position is loud, quiet or somewhere between the twoextremes. Explain. Use a diagram to help. [Note: Do not assume the person is far away.Comment on why that makes a difference.]
- The figure shows two loudspeakers (A) and (B), and a point (C) where a listener is positioned. The speakers vibrate inphase and are playing a 66.0 Hz tone. The speed of sound is 343 m/s. The listener at point (C) hears the first farthestloud sound (excluding infinity) at a distance 6.50 m as measured from speaker (A). What is the separation (d) betweenthe two speakers?Two speakers recieve the same 256 Hz signal from an amplifier. When one speaker is placed directly behind the other, what is the smallest distance between them that produces destructive interference at any point in front of them?(speed of sound=342m/s)An interference pattern is setup with two point sources of the same frequency vibrating in phase. A point on the second nodal line is 25.0 cm from one source, 29.5 cm from the other source. The speed of the waves is 7.5 cm/sec. Calculate the wavelength and the frequency of the sources.
- I hear a siren A at 30m distance with 20dB loudness. If siren A is replaced by siren B which is 6 times louder than A, then what is the loudness I now hear?Speaker 1 is at x = 0 and speaker 2 is to the right and facing it at x = 8 m. The speakers are to the same amplifier, which plays a tone at 327 Hz. Find the x-coordinate in meters of the first point of constructive interference that is right of center, if the temperature in the room is 18°C. connected continuous Take the speed of sound to be T v = (331 m/s) √ 273 K X = 3What is the resultant sound level when an 81-dB sound and an 87-dB sound are heard simultaneously? This question is in the library, but, some of the answers is not visible. Some of the values are not viewable. I, and anyone else who wants to use it, need a copy that is fully readable. I should not have to "use up" my questions getting clean images like this.
- Speaker 1 is at x = 0 and speaker 2 is to the right and facing it at x = 3 m. The speakers are to the same amplifier, which plays a tone of unknown frequency. If the first point of destructive interference is 0.18 m to the left of the center, find the frequency in Hz. The speed of sound is 345 m/s. connected continuous f = HzSuppose a Speaker is at (0, a.4)m. An Identical opeaker, Connected to the same amplifier is at l6.4,0) M. Both Speakers are putting out a scrund with the same frequency and phase. Find the x-value of a point of construcHve interference between (0,0) and the Speaker on the x-axis, regardless of frequency .A 1,720-Hz tone is played on a stereo in an open field. A person stands at a point that is 4 m from one of the speakers and 4.4 m from the other. What must the minimum wavelength be for the person to hear the tone? (Hint: because of interference, two waves add constructively or destructively. If the sound is heard the interference must be constructive. For interference to be constructive, the difference in distance must be a multiple of the wavelength. That is, the difference in distances from the speakers must be 1 wavelength, two wavelengths, three wavelengths, etc.)