In the acoustic interferometer in the figure, the loudspeaker speaker emits a sound of frequency 10 kHz and the distance L was adjusted such that the microphone capture a maximum of intensity. The upper arm (section shaded) is then dipped in liquid nitrogen, so that the air temperature in that region of the tube drops slowly from room temperature to 27-100°C. Since the speed of sound in air at a temperature T (in Kelvin) is vsom = V(gamma*R*T/Mmolar) and treating air as an ideal diatomic gas (gamma =715) of molar molar mass = 28.88 g, calculate how many times the microphone will pick up minimum intensity during the process. Take R = 8,314 J/K.mol and assume that the air temperature does not change in others sections of the interferometer.
In the acoustic interferometer in the figure, the loudspeaker speaker emits a sound of frequency 10 kHz and the distance L was adjusted such that the microphone capture a maximum of intensity. The upper arm (section shaded) is then dipped in liquid nitrogen, so that the air temperature in that region of the tube drops slowly from room temperature to 27-100°C. Since the speed of sound in air at a temperature T (in Kelvin) is vsom = V(gamma*R*T/Mmolar) and treating air as an ideal diatomic gas (gamma =715) of molar molar mass = 28.88 g, calculate how many times the microphone will pick up minimum intensity during the process. Take R = 8,314 J/K.mol and assume that the air temperature does not change in others sections of the interferometer.
a)1
b)2
c)3
d)4
e)5
f)6
g)7
h)8
i)9
j)10
Step by step
Solved in 4 steps with 1 images
