1) The bulk modulus of a gas varies with pressure. In the case of the air, the bulk modulus of air is equal to 1.40 times its pressure. the atmospheric pressure at sea level is 1.01 * 105 N/m2. The density of air at sea level is 1.20 kg/m3. For these conditions, what is the speed of sound as it passes through the air?
b. 343 m/s
c. 1.70 km/hr
d. 5280 ft/s
Answer: b. 343 m/s
speed of sound = square root of (B/rho) = square ...
The solution calculates the speed of sound as it passes through the air.
Sound Intensity from jet engine; first harmonic frequency
Sound intensity at 3 m from a jet engine is 2 W/m2 .
(a)What is the intensity at 1500 m? (b) Convert your answer for intensity to decibel scale.
Quantitatively explain why the speed of sound in He about thrice the speed of sound in air.
First harmonic frequency of a Harp string is 164.8 Hz. What are its frequencies of second and third harmonics?