4. Your ears detect a sound wave with a frequency of 315 Hz and a sound...
4. Your ears detect a sound wave with a frequency of 315 Hz and a sound intensity level of 80 dB. It originated in a vibrating string with a length of 1.9 meters.
A) Waves can be longitudinal or transverse. What is the difference between these two kinds of waves?
B) This question has one longitudinal wave and one transverse wave. Identify them.
C) Recall that the sound you hear from a string is the fundamental frequency, which has a wavelength equal to 2 times the length of the string. Therefore the wavelength of this wave is 3.8 meters. What is the speed of the wave on the vibrating string?
D) What is the intensity of this sound in Watts per square meter?
E) What is the amplitude of the pressure wave that your ear feels in response to this sound?
Homework Answers
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4. Your ears detect a sound wave with a frequency of 315
Hz and a sound...
A sound wave with a frequency of 250 Hz is transmitted through air at 25° C...
A sound wave with a frequency of 250 Hz is transmitted through air at 25° C (298.2K) The specific gas constant for air is 287 J/kg K, and tne specific heat ratio is γ = 1.40. Determine (i) The speed of sound, (i) The wavelength, (ii) The wave number, (iv) The angular frequency for this condition. The noise level measured at a particular location in a factory with a noisy machine operating nearby is 92 dB(A). When the machine is...
O yes QUESTION 2 A wave has period of 20 s. The frequency is Hz. QUESTION...
O yes QUESTION 2 A wave has period of 20 s. The frequency is Hz. QUESTION 3 A wave has frequency of 200 Hz. The period is s QUESTION 4 A rope wave travels at 20 m /s with a frequency of 4 Hz. The wavelength ism. Click Save and Submit to save and submit. Click Save All Answers to save all answers. /shsu blackboard.com/webapps/assessment/take/aunch.jsp?course assessment id- 220022 18course id- 118791.18 v Question Completion Status: QUESTIONS A rope wave has...
4. A 58.0-cm guitar string produces a sound wave with a fundamental frequency of 105 Hz....
4. A 58.0-cm guitar string produces a sound wave with a fundamental frequency of 105 Hz. The speed of sound in air is 338 m/s. Determine the ratio of the wavelength of the waves that travel on the string to the wavelength of the generated sound wave. 2.78 0.360 0.180 0.721 5.55
DETR A sound wave, of frequency 17 x 10 1tz and intensity 3 x 10-3 w/...
DETR A sound wave, of frequency 17 x 10 1tz and intensity 3 x 10-3 w/ travels in a medium with a velocity of 340 m/s (a) What 'is the wavelength of the waye in this megdium (b) If the intensity level is increased by 30 db, what is the inter the new wave? (o II this wave is produced by a siring fixed on both ends as it harmonic, what is the length of the string?
A water wave has a frequency of 10 Hz and a length of 2.5 meters. What...
A water wave has a frequency of 10 Hz and a length of 2.5 meters. What is the period of these waves? What is the wave velocity? What is the distance (in meters) traveled by a sound wave in 22 seconds as the wave moves through Air? A steel rail A 600 Hz sound has a velocity of 1087 ft/s in the air and 4920 ft/s in water. Find the wavelength of this sound: In air In water
S.a) What is the wavelength of a sound wave general fundamental frequency is 128 Hz and...
S.a) What is the wavelength of a sound wave general fundamental frequency is 128 Hz and it travels with spo the tube? sound wave generated in a tube with two open ends whose d it travels with speed of sound v = 340 m/s? (b) What is the length of (a) = (b) L= = 340 m/s, 11 o. (a) What length should a tube closed at one end have on a day when the speed of sound its fundamental...
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 wave is described by y = 0.020 8 sin(kx - wt), where k = 2.22 rad/m, w = 3.66 rad/s, x and y are in meters, and t is in seconds
6. A wave is described by y = 0.020 8 sin(kx - wt), where k = 2.22 rad/m, w = 3.66 rad/s, x and y are in meters, and t is in seconds. (a) Determine the amplitude of the wave. (b) Determine the wavelength of the wave. (c) Determine the frequency of the wave. (d) Determine the speed of the wave. 7. When a particular wire is vibrating with a frequency of 3.00 Hz, a transverse wave of wavelength 64.0 cm is produced. Determine the...
4. The variation of pressure in a sound wave is described by the following function p-17...
4. The variation of pressure in a sound wave is described by the following function p-17 sin (6.50x-1 500t + π/2) Nm? where x is in meters and t is in seconds. (a) By comparing to the general form of the functions describing sound waves in Equation 1.6 and in Exercise 1.4, determine the amplitude of the pressure variations, the angular wave number, the angular frequency and the phase angle, giving the correct units for each. Determine (b) the amplitude...
t = 0 ms (a) (4 marks) A sinusoidal wave moving along a string is shown...
t = 0 ms (a) (4 marks) A sinusoidal wave moving along a string is shown twice in the figure at time t = 0 (top) and time t = 4t (bottom). After At = 4.0 ms, the crest travels d=6.0 cm in the positive x direction. The equation for the wave is in the form 8 mm H HHHx y(x, t) =Ym sin(kx = wt). t = 4 ms What are (i) ym, (ii)k, (iii) w, and (iv) the...
A sound wave with a frequency of 250 Hz is transmitted through air at 25° C (298.2K) The specific gas constant for air is 287 J/kg K, and tne specific heat ratio is γ = 1.40. Determine (i) The speed of sound, (i) The wavelength, (ii) The wave number, (iv) The angular frequency for this condition. The noise level measured at a particular location in a factory with a noisy machine operating nearby is 92 dB(A). When the machine is...
O yes QUESTION 2 A wave has period of 20 s. The frequency is Hz. QUESTION 3 A wave has frequency of 200 Hz. The period is s QUESTION 4 A rope wave travels at 20 m /s with a frequency of 4 Hz. The wavelength ism. Click Save and Submit to save and submit. Click Save All Answers to save all answers. /shsu blackboard.com/webapps/assessment/take/aunch.jsp?course assessment id- 220022 18course id- 118791.18 v Question Completion Status: QUESTIONS A rope wave has...
4. A 58.0-cm guitar string produces a sound wave with a fundamental frequency of 105 Hz. The speed of sound in air is 338 m/s. Determine the ratio of the wavelength of the waves that travel on the string to the wavelength of the generated sound wave. 2.78 0.360 0.180 0.721 5.55
DETR A sound wave, of frequency 17 x 10 1tz and intensity 3 x 10-3 w/ travels in a medium with a velocity of 340 m/s (a) What 'is the wavelength of the waye in this megdium (b) If the intensity level is increased by 30 db, what is the inter the new wave? (o II this wave is produced by a siring fixed on both ends as it harmonic, what is the length of the string?
S.a) What is the wavelength of a sound wave general fundamental frequency is 128 Hz and it travels with spo the tube? sound wave generated in a tube with two open ends whose d it travels with speed of sound v = 340 m/s? (b) What is the length of (a) = (b) L= = 340 m/s, 11 o. (a) What length should a tube closed at one end have on a day when the speed of sound its fundamental...
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)
4. The variation of pressure in a sound wave is described by the following function p-17 sin (6.50x-1 500t + π/2) Nm? where x is in meters and t is in seconds. (a) By comparing to the general form of the functions describing sound waves in Equation 1.6 and in Exercise 1.4, determine the amplitude of the pressure variations, the angular wave number, the angular frequency and the phase angle, giving the correct units for each. Determine (b) the amplitude...
t = 0 ms (a) (4 marks) A sinusoidal wave moving along a string is shown twice in the figure at time t = 0 (top) and time t = 4t (bottom). After At = 4.0 ms, the crest travels d=6.0 cm in the positive x direction. The equation for the wave is in the form 8 mm H HHHx y(x, t) =Ym sin(kx = wt). t = 4 ms What are (i) ym, (ii)k, (iii) w, and (iv) the...
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