A pair of speakers separated by .700 m are driven by the sameoscillator at a frequency of 690 Hz. An observer originallypositioned at one of the speakers begins to walk along a lineperpendicular to the line joining the speakers.
a. How far must the observer walk before reaching a relativemaximum in intensity?
b. How far will the observer be from the speaker when the firstrelative minimum is detected in the intensity?