Sound emerges through a doorway, as in the figure. The width of
the doorway is 76 cm, and the speed of sound is 343 m/s. Find the
diffraction angle ? when the frequency is each of the
following.
(a) 5.8 kHz
_______°
(b) 5.8 ? 102 Hz
_______°
Suppose the first maximum (what does it mean in this case?...): m=1
v=speed of sound
a=width of the door
Replace lambda in the first eq and get theta:
(a) theta1~4.6 deg
(b) theta2~53.2 deg.
Sound emerges through a doorway, as in the figure. The width of the doorway is 76...
3. (4 points) Sound emerges through a doorway as shown in the figure. The width of the doorway is 77 cm, and the speed of sound is 343 m/s. Find the diffraction angle when the frequency of the sound is (a) 5.0 kHz and (b) 5.0.102 Hz. 0 8 III - B=
4. Loudspeakers A and B are vibrating in phase and are playing the same tone, which has a frequency of 250 Hz. They are set up as in Figure 17.7, and point C is located as shown there. However, the distance between the speakers and the distance between speaker B and point C have the same value d. The speed of sound is 343 m/s. What is the smallest value of d, such that constructive interference occurs at point C?...
Sound with a frequency of 1220 Hz leaves a room through a doorway with a width of 1.00 m . At which angles relative to the centerline perpendicular to the doorway will someone outside the room hear no sound? Use 344 m/s for the speed of sound in air and assume that the source and listener are both far enough from the doorway for Fraunhofer diffraction to apply. You can ignore effects of reflections. for 1, 2, 3
A sound wave with a frequency of 12.6 kHz emerges through a circular opening that has a diameter of 0.217 m. Find the diffraction angle θ when the sound travels (a) in air and (b) in water. (Note: The speed of sound in air is 343 m/s and the speed of sound in water is 1482 m/s.)
A sound wave with a frequency of 12.1 kHz emerges through a circular opening that has a diameter of 0.212 m. Find the diffraction angle θ when the sound travels (a) in air and (b) in water. (Note: The speed of sound in air is 343 m/s and the speed of sound in water is 1482 m/s.)
A sound wave a frequency of 20 kHz emerges through a circular opening that has a diameter of 0.78 m. Concepts: The diffraction angle for a wave emerging through a circular opening is given by sin(theta) = 1.22 /D, where is the wavelength of the sound and D is the diameter of the opening. What is meant by the diffraction angle? the angle that the sound wave bends away from the center before passing through the opening the location of...
High-frequency sound waves exhibit less diffraction than low-frequency sound waves do. However, even high frequency sound waves exhibit much more diffraction under normal circumstances than do light waves that pass through the same opening. The highest frequency that a healthy ear can typically hear is 2.0 × 104 Hz. Assume that a sound wave with this frequency travels at 342 m/s and passes through a doorway that has a width of 1.2 m. (a) Determine the angle that locates the...
Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such a loudspeaker is mounted outside on a pole. In winter, when the temperature is 273 K, the diffraction angle θ has a value of 10o. What is the diffraction angle for the same sound on a summer day when the temperature is 311 K?
Sound exits a diffraction horn loudspeaker through a rectangular opening like a small doorway. Such a loudspeaker is mounted outside on a pole. In winter, when the temperature is 273 K, the diffraction angle θ has a value of 17o. What is the diffraction angle for the same sound on a summer day when the temperature is 311 K?
NT RESOURCESChapter 17, Pro Chapter 17, Problem 65 Chalkboard Video Copy of Chapter 17 Problems, Sections 17.1-17.3 A sound wave with a frequency of 13.0 kHz emerges through a circular opening that has a diameter of 0.199 m. Find the diffraction angle θ when the sound travels (a) in air and (b) in water. (Note: The speed of sound in air is 343 m/s and the speed of sound in water is 1482 m/s) Units Chapter 17. Problem 17(a) Number...