Two sources spaces 2L apart, where L = 88-cm, emit sound waves isotropically and in phase, each with power P = 14-W.

Two sources spaces 2L apart, where L = 88-cm, emit sound waves isotropically and in phase, each with power P = 14-W. A wall is placed a distance L away from the sources,

 and the waves pass through a hole of cross-sectional area A = 20-cm2. Calculate the total energy transported through the hole in a time period of t = 5.4-s.

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