Suppose two waves, identical except for the direction of travel, approach each other in a medium that obeys hooke's law. at certain instants, the waves interfere constructively at all positions. suppose that the kinetic energy in each of the initial waves is k. at one such instant, when their peaks align, determine the kinetic energy of the wave function that results from the superposition of both waves. (the answer is a number that does not depend on k)