A longitudinal standing wave = a cos kx cos (or is maintained in a homogeneous medium of

Question:

A longitudinal standing wave ε = a cos kx ∙ cos (or is maintained in a homogeneous medium of density p. Find the expressions for the space density of (a) Potential energy wp (x, t);
(b) Kinetic energy wk (x, t). Plot the space density of the total energy w in the space between the displacement nodes at the moments t = 0 and t = T/4, where T is the oscillation period.
Distribution
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