Question

4. The variation of pressure in a sound wave is described by the following function p-17 sin (6.50x-1 500t + π/2) Nm? where x is in meters and t is in seconds. (a) By comparing to the general form of the functions describing sound waves in Equation 1.6 and in Exercise 1.4, determine the amplitude of the pressure variations, the angular wave number, the angular frequency and the phase angle, giving the correct units for each. Determine (b) the amplitude of the longitudinal displacements and (c) the average intensity of the sound, which is propagating in air (ai 1.2 kg/m)

Answer 1

we can calculate the parameters like amplitude of pressure variations, wave number, angular frequency, phase angle by comparing it with standard equation as solved below