Propagation of sound in air involves adiabatic changes and the speed of sound is given by ow adt olol e esaho V= p where p is density of the medium. Calculate the velocity of sound in *He at 6 K and 19.7 atm nressure. The isothermal compressibility and density of "He under given conditions are respectively 9.42 x 10 m°Nand 162 kg m. Take y = 148. v102 ms-