For a Gaussian pulse propagating along a string, calculate kinetic and potential energies and momentum.
See attached file for full problem description.
The formulation of the task lacks some details, so I made the following guesses:
(1) The wave is longitudinal elastic
(2) f(x,t) is the displacement of a point which would be at x in equilibrium.
(3) The area B of the cross section of the wire ...