Question

Calculate the speed of sound in a liquid of density 8000 kg/m^3 and bulk modulus 2 x 10^9 N/m^2 .

Answer 1

Answer:

For aluminium, the bulk modulus of elasticity is 7.5 x 1010 N/m2 and density is 2.70 x 103 kg/m3. Hence B = 7.5 x 1010 N/m2 and ρ = 2.70 x 103 kg/m3.  Thus, v = √(B/ ρ) or, v = √(7.5 x 1010/ 2.70 x 103)   = 5.3 * 103    m/s. The bulk modulus can be referred as relative change in volume of anybody produced by the tensile stress or unit compressive acting over the surface uniformly.