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17. Consider a plane wave at a frequency of 1,000 Hz in air and Lp 87...
2. A sound wave in air has a frequency of 510 Hz and a wavelength of...
2. A sound wave in air has a frequency of 510 Hz and a wavelength of 0.68 m. What is the air temperature? a 18°C c. 15°C d. 27°C e. 8°C 3. What is the intensity of a sound with a measured intensity level of 83 dB? (lo a. 8.4*10 W/m2 b. 2.0*104 W/m2 c. 1.3*10-5 W/m2 d. 7.4*104 W/m2 e. 0.4*103 W/m2 1012 W/m2)
A sound wave has an intensity level of 123.5 dB in air. The density of air...
A sound wave has an intensity level of 123.5 dB in air. The density of air at 20.0°C is ρ = 1.20 kg/m3. The speed of sound in air at 20.0°C is v = 343 m/s What is the pressure amplitude of the wave? in N/m2
A plane wave at 2,000 Hz has a sound intensity level of 75 dB. What is...
A plane wave at 2,000 Hz has a sound intensity level of 75 dB. What is Prms in Pa? d. 3.6x10 5.1x10-1 f. None of the above a. 3.6x10-2 b. 1.1x10-1 c. 2.3x10-1 e. 0. A plane wave at 1,050 Hz in air at room temperature has a sound intensity level of 60 dB. What is the wavelength in ft? a. 0.27 b. 0.33 d. 0.90 1.07 e. c. 0.78 f. None of the above
A plane wave at 2,000...
The sound from a trumpet radiates uniformly in all directions in air with a temperature of...
The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20∘C. At a distance of 4.98 m from the trumpet the sound intensity level is 56.0 dB. The frequency is 586 Hz. Use 344 m/s for the speed of sound in air, 1.20 kg/m3 for the density of air, and 1.00×10−12 W/m2 for the reference intensity. a) What is the pressure amplitude at this distance? b) What is the displacement amplitude? Use 1.42×105 Pa...
The intesity of a wave is I=2π2ρvf2A2, where ρ is the density of the medium, v...
The intesity of a wave is I=2π2ρvf2A2, where ρ is the density of the medium, v is the speed of wave, f is the frequency, and A is the amplitude. The density of air is 1.29 kg/m3, the speed of sound in air is 343 m/s, the intensity of the reference level required to determine the sound level is 1.0×10−12W/m2. What would be the sound level (in dB ) of a sound wave in air that corresponds to a displacement...
The sound from a trumpet radiates uniformly in all directions in air with a temperature of...
The sound from a trumpet radiates uniformly in all directions in air with a temperature of 20∘C. At a distance of 4.90 m from the trumpet the sound intensity level is 49.0 dB . The frequency is 584 Hz . Part A What is the pressure amplitude at this distance? Use 344 m/s for the speed of sound in air, 1.20 kg/m3 for the density of air, and 1.00×10−12 W/m2 for the reference intensity. Part B What is the displacement...
A 85.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The...
A 85.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. What is the displacement amplitude of a 85.0-Hz sound wave?
A 72.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The...
A 72.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at 20.0°C is 1.20 kg/m3. Speed of sound in air at 20.0°C is 343 m/s. What is the displacement amplitude of a 72.0-Hz sound wave? Answer in nm
1. If a sound of frequency 1000 Hz has intensity level 30 dB, what would be...
1. If a sound of frequency 1000 Hz has intensity level 30 dB,
what would be the intensity level of sound frequency 50 Hz which
appears to have equal loudness? (Answer= 60 dB)
2. Intensity of 30 dB, 1000 Hz sound= (Answer= 1.000 x 10-9
W/m^2)
*3. What is intensity (in W/m^2) of the equal loudness 50 Hz
sound? (Answer is NOT 50.12 x 10^-12)
*4. What is the ratio of the pressure variation (in amplitude)
of the equal loudness...
A sound wave traveling in 20°C air has a pressure amplitude of 0.448 Pa. What is...
A sound wave traveling in 20°C air has a pressure amplitude of 0.448 Pa. What is the intensity of the wave? (Assume the density of air is 1.29 kg/m3. Enter your answer in W/m2.) ________W/m2
2. A sound wave in air has a frequency of 510 Hz and a wavelength of 0.68 m. What is the air temperature? a 18°C c. 15°C d. 27°C e. 8°C 3. What is the intensity of a sound with a measured intensity level of 83 dB? (lo a. 8.4*10 W/m2 b. 2.0*104 W/m2 c. 1.3*10-5 W/m2 d. 7.4*104 W/m2 e. 0.4*103 W/m2 1012 W/m2)
A plane wave at 2,000 Hz has a sound intensity level of 75 dB. What is Prms in Pa? d. 3.6x10 5.1x10-1 f. None of the above a. 3.6x10-2 b. 1.1x10-1 c. 2.3x10-1 e. 0. A plane wave at 1,050 Hz in air at room temperature has a sound intensity level of 60 dB. What is the wavelength in ft? a. 0.27 b. 0.33 d. 0.90 1.07 e. c. 0.78 f. None of the above
A plane wave at 2,000...
1. If a sound of frequency 1000 Hz has intensity level 30 dB,
what would be the intensity level of sound frequency 50 Hz which
appears to have equal loudness? (Answer= 60 dB)
2. Intensity of 30 dB, 1000 Hz sound= (Answer= 1.000 x 10-9
W/m^2)
*3. What is intensity (in W/m^2) of the equal loudness 50 Hz
sound? (Answer is NOT 50.12 x 10^-12)
*4. What is the ratio of the pressure variation (in amplitude)
of the equal loudness...
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