Which of the following is not a property of acoustic waves?
A. Pressure and particle velocity are in-phase.
B. Particles in the medium oscillate with equal excursion in the positive and negative directions.
C. The wave front is attenuated by converting the energy in the pressure wave to heat.
D. There is movement of the material.
Answer:D
Which of the following is not a property of acoustic waves?
A. Pressure and particle velocity are in-phase. B. Particles in the medium oscillate with equal excursion in the positive and negative directions. C. The wave front is attenuated by converting the energy in the pressure wave to heat. D. There is movement of the material.