What's an example of chemical energy being converted to sound energy

Which one of the following research methods can show cause and effect

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.