A riverside warehouse has two open doors, as in Figure P24.11. A boat on the river sounds its horn. To person A the sound is loud and clear. To person B the sound is barely audible. The principal wavelength of the sound waves is 2.80 m. Assuming person B is at the position of the first minimum, determine the distance between the doors, center to center.
Please see attached for diagram.
Formulas, calculations and solution is attached. One reference included.