SSM In Fig. 17-37, two speakers separated by distance d 1 = 2.00 m are in phase. Assume the amplitudes of the sound waves from the speakers are approximately the same at the listener’s ear at distance d 2 = 3.75 m directly in front of one speaker. Consider the full audible range for normal hearing, 20 Hz to 20 kHz. (a) What is the lowest frequency f min, 1 that gives minimum signal (destructive interference) at the listener’s ear? By what number must f min, 1 be multiplied to get (b) the second lowest frequency f min, 2 that gives minimum signal and the third lowest frequency f min, 3 that gives minimum signal? What is the lowest frequency f max, 1 that gives maximum signal (constructive interference) at the listener's ear? By what number must f max, 1 be multiplied to get (e) the second lowest frequency f max, 2 that gives maximum signal and (f) the third lowest frequency f max, 3 that gives maximum signal? Figure 17-37 Problem 21.
SSM In Fig. 17-37, two speakers separated by distance d 1 = 2.00 m are in phase. Assume the amplitudes of the sound waves from the speakers are approximately the same at the listener’s ear at distance d 2 = 3.75 m directly in front of one speaker. Consider the full audible range for normal hearing, 20 Hz to 20 kHz. (a) What is the lowest frequency f min, 1 that gives minimum signal (destructive interference) at the listener’s ear? By what number must f min, 1 be multiplied to get (b) the second lowest frequency f min, 2 that gives minimum signal and the third lowest frequency f min, 3 that gives minimum signal? What is the lowest frequency f max, 1 that gives maximum signal (constructive interference) at the listener's ear? By what number must f max, 1 be multiplied to get (e) the second lowest frequency f max, 2 that gives maximum signal and (f) the third lowest frequency f max, 3 that gives maximum signal? Figure 17-37 Problem 21.
SSM In Fig. 17-37, two speakers separated by distance d1 = 2.00 m are in phase. Assume the amplitudes of the sound waves from the speakers are approximately the same at the listener’s ear at distance d2 = 3.75 m directly in front of one speaker. Consider the full audible range for normal hearing, 20 Hz to 20 kHz. (a) What is the lowest frequency fmin, 1 that gives minimum signal (destructive interference) at the listener’s ear? By what number must fmin, 1 be multiplied to get (b) the second lowest frequency fmin, 2 that gives minimum signal and the third lowest frequency fmin, 3 that gives minimum signal? What is the lowest frequency fmax, 1 that gives maximum signal (constructive interference) at the listener's ear? By what number must fmax, 1 be multiplied to get (e) the second lowest frequency fmax, 2 that gives maximum signal and (f) the third lowest frequency fmax, 3 that gives maximum signal?
A sound wave arriving at your ear is transferred to the fluid in the cochlea. If the intensity in the fluid is 0.410 times that in air and the frequency is the same as for the wave in air, what will be the ratio of the pressure amplitude of the wave in air to that in the fluid? Approximate the fluid as having the same values of density and speed of sound as water. Speed of sound in dry air (20.0°C, 1.00 atm) is 343 m/s, density of dry air (at STP) is 1.29 kg/m3, density of water is 1000 kg/m3, and speed of sound in water is 1493 m/s.
For a 171Hz plane traveling wave in air with a sound pressure level of 40 dB re 20 pPa, find (a)the acoustic pressure amplitude, (b) the intensity, (c)the acoustic particle speed amplitude, (d) the acoustic density amplitude, (e) the particle displacement amplitude
A point source broadcasts sound into a uniform medium. If the intensity at a distance r is I, by what factor will the intensity change when the distance changes to 1.8r?
College Physics: A Strategic Approach (4th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.