Problem: The longitudinal displacement of a mass element in a medium as a sound wave passes through it is given by s = smcos(kx-wt). Consider a sound wave of frequency 440 Hz and wavelength 0.75m. If sm = 12 µm,
A- What is the displacement of an element of air located at x = 1.2 m at time t = 0.11 s?
Rework your solution from the beginning and check each step carefully.