Calculate the displacement amplitude (in m) of a 20 kHz sound wave in helium if it has a pressure amplitude of 8.0 × 10^?3 N/m2 . (? = 0.179 kg/m3, v = 972 m/s.)
a. 2.9 × 10^?10
b. 3.7 × 10^?10
c. 7.8 × 10^?9
d. 2.4 × 10^?9
e. 1.9 × 10^?10
b
You might also like to view...
If an electron has a measured wavelength of 0.832 × 10^?10 m, what is its kinetic energy? (h = 6.63 × 10^?34 J?s, 1 eV = 1.6 × 10^?19 J, and me = 9.11 × 10^?31 kg)
a. 7640 eV b. 418 eV c. 334 eV d. 218 eV e. 70 eV
An engineer uses a river (minimum temperature 
to cool his electrical plant which heats water with a boiler operating at 
His boiler uses 420 kW of energy to heat water to steam. What is the maximum power output under ideal circumstances?
A. 230 kW B. 186 kW C. 330 kW D. 416 kW
When rolled down a mountainside at 7.0 m/s, the horizontal component of its velocity vector was 1.8 m/s. What was the angle of the mountain surface above the horizontal?
A) 15° B) 75° C) 33° D) 57 °
The ____ is responsible for binding the electrons to the nucleus
a. Kirchhoff's law b. ground state c. temperature d. Coulomb force e. Balmer series