A-2 The faintest sound detectable by the human ear has an intensity of about 1x101 W/m“. a) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 512Hz. b) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 1,024HZ. 4-3 Sound with o londneon of 100ap 1..102 10:12

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Chapter13: Mechanical Waves
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b) Find the wavelength of these sound waves.
IA-2 The faintest sound detectable by the human ear has an intensity of about 1x1012W/m?.
a) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 512Hz.
b) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 1,024HZ.
JA-3 Sound with a loudno0g of 100dn .
10:12
Transcribed Image Text:b) Find the wavelength of these sound waves. IA-2 The faintest sound detectable by the human ear has an intensity of about 1x1012W/m?. a) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 512Hz. b) Find the pressure and displacement amplitudes for this intensity of sound at a frequency of 1,024HZ. JA-3 Sound with a loudno0g of 100dn . 10:12
Answers
IA-1 a) 0.0746W/m, Pm=8.13N/m, Sm7.30x10 m
IA-2 a) pm=2.98x10 N/m, Sm-2.09x10m
IA-3 Pm-2.98N/m", Sm 2.09x10°m
IA-4 a) pm-1×10ʻN/m², k=15.7rad/m, o=5.39x10*rad/s b) Sm4.18x10 m
c) Hints: What moves? Is sound a transverse or longitudinal wave?
b) 0.858m
b) pm-2.98x10 N/m², Sm=1.04x10llm
Transcribed Image Text:Answers IA-1 a) 0.0746W/m, Pm=8.13N/m, Sm7.30x10 m IA-2 a) pm=2.98x10 N/m, Sm-2.09x10m IA-3 Pm-2.98N/m", Sm 2.09x10°m IA-4 a) pm-1×10ʻN/m², k=15.7rad/m, o=5.39x10*rad/s b) Sm4.18x10 m c) Hints: What moves? Is sound a transverse or longitudinal wave? b) 0.858m b) pm-2.98x10 N/m², Sm=1.04x10llm
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