what is the density of air? Need it in 2 hours!!! 1. The problem statement, all variables and given/known data For a gas at pressure P, the Bulk modulus B (under adiabatic conditions of change) is g · P. At a certain temperature, at normal atmospheric pressure, the velocity of sound in air is found to be 339.5 m/s. If g for air is 1.40, what is the density of air (in kg/m3) at that temperature ? 2. The attempt at a solution Given wavelength, and v, then I found f: f = v / wavelength = 242.5 Hz. I know that: B = v^2 * p and B = wavelength * P => v^2 * p = wavelength * P but how to find P? I need it in couple of hours. Please advise! Thanks a lot!