19-3* The speed of sound as in the case of the transverse mechanical wave the speed of a sound wave depends on the ratio of an elastic property of the medium and an inertial property. For a 3D fluid BP (19-4 v=343m/S.20°C Note: 1)B is the bulk modulus, 2a_is the mass density 2)Use Newton's law for a system of particles (∑Fanx=Mm(19-4)  0 B v = As in the case of the transverse mechanical wave, the speed of a sound wave depends on the ratio of an elastic property of the medium and an inertial property. For a 3D fluid, Note:1) B is the bulk modulus, is the mass density. 2) Use Newton’s law for a system of particles. ( ) Fext,x = Macm,x 19-3* The speed of sound vair m s C  = 343 / , 20 0