In a first experiment, a sinusoIdal sound wave is sent through a long tube of air, transporting energy at the average rate ofP_{a}vg, 1In a second experimen, two otner souna waves, ldenucal to the TIrst one, are to de sent sinmultaneously througn the tube with a phase difference of either 0, 0.2 wavelength, or 0.5 wavelength between the waves. (a) With only mental calculation, rank those choices of according to the average rate at which the waves will transport energy, greatest first (b) For the first choice of , what is the average rate in terms of