Question

In: Physics

A sound wave in air at 20 Celsius has a frequency of 151 Hz and a displacement amplitude of...

A sound wave in air at 20 Celsius has a frequency of 151 Hz and a displacement amplitude of 5.40×10-3 mm.

Part A
For this sound wave calculate the pressure amplitude (in Pa).
Use 1.42×105 Pa for the adiabatic bulk modulus.

Pmax= 2.11 Pa

Part B
Find the intensity of the wave
Use 1.20 kg/m^3 for the density of air.
I=?



Solutions

Expert Solution


Related Solutions

A sound wave has a propagation speed of 349 m/s, a frequency 1026 Hz, and has...
A sound wave has a propagation speed of 349 m/s, a frequency 1026 Hz, and has a maximum displacement of ym= 3.02x10-7 m. At time t= 0, and x= 0, the displacement is ym = 1.00x10-7 m. (a) Using these values, find an equation of form:            y(x,t) = ym sin(kx - ωt + ϕ) (b) Differentiate the expression and find the maximum speed of the oscillating air molecules. (c) Find the maximum magnitude of acceleration of the...
A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm,
A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.23×105 Pa . The speed of sound in air is 344 m/s.Part AWhat is the highest-frequency sound to which this machine can...
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC...
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC air. The sound wave strikes a solid block of steel and propagates into the steel. What is the wavelength of the sound wave inside the steel. The density of steel is 7.85 g/cm3 and the bulk modulus of steel is 1.6 x 1011 N/m2 . Select a choice 1. 0.787 m 2. 4515 m 3. 346 m 4. 10.26 m 5. 1.27 m
In technical normal state air the initial phase of a 310Hz frequency, 0.07Pa sound pressure amplitude...
In technical normal state air the initial phase of a 310Hz frequency, 0.07Pa sound pressure amplitude free, plane wave traveling in +x direction is 60degree. Determine the sound pressure in the sound field 18minutes later, 175m far from the origin! Let calculate the sound pressure level as well, in the same place!
An electromagnatic wave is traveling in vacuum with frequency 6.5 x 1014 Hz. The wave has...
An electromagnatic wave is traveling in vacuum with frequency 6.5 x 1014 Hz. The wave has average total energy density of 4.6 x 10-6 J/m3. (a) What is the speed of this wave? (b) What is the wavelength of this wave? (c) What is the maximum electric field of this wave? (d) What is the rms magnetic field of this wave? (e) How much energy does a 2 m2 flat surface (perpendicular to the wave propagation direction) receive in 8...
what is the frequency of a sound wave made by
what is the frequency of a sound wave made by
Given two wave that has the same amplitude, frequency and direction that they are traveling in,...
Given two wave that has the same amplitude, frequency and direction that they are traveling in, BUT they have a phase that is a difference of 2Pi. When one adds both waves up we get: a) Nothing b) A wave with twice the wavelength of the original c) A wave with twice the amplitude of the original d) A wave with twice the frequency of the original e) None of the above
A transverse traveling wave on a taut wire has an amplitude of0.200 mm and a frequency...
A transverse traveling wave on a taut wire has an amplitude of0.200 mm and a frequency of 530 Hz. Ittravels with a speed of 196 m/s. (a) If the wave equation is written in the formy = A sin(kx - ωt), whatare the parameters A, k, andω? 1 m 2 rad/m 3 rad/s (b) The mass per unit length of this wire is 3.50 g/m. Find the tension in the wire. 4 N
A wave of water behaves like a plane wave with a frequency of 12 Hz breaks...
A wave of water behaves like a plane wave with a frequency of 12 Hz breaks as it passes a sharp barrier between deep and shallow water. The velocity of the wave's propagation in the deep water is 24 cm/s, the angle of the wave reaching the barrier is 60o and the breaking wave angle at the barrier is 40o. a. What is the velocity of propagation of the wave in shallow water? b. What is the wavelength in the...
1. a) A machine part is undergoing SHM with a frequency of 4.95 Hz and amplitude...
1. a) A machine part is undergoing SHM with a frequency of 4.95 Hz and amplitude 1.85 cm. How long does it take the part to go from x=0 to x=? 1.85 cm? bi) An object is undergoing SHM with period 0.930 s and amplitude 0.320 m. At t = 0, the object is at x = 0.320 mand is instantaneously at rest. Calculate the time it takes the object to go from x = 0.320 m, to x =...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT