4.50 m А В
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Small speakers A and B are driven in phase at 725 Hz by the
same audio oscillator. Both speakers start out 4.50 m from the listener,
but speaker A is slowly moved away (Fig.). (a) At what distance d
will the sound from the speakers first produce destructive interference
at the listener’s location? (b) If A is moved even farther away than in
part (a), at what distance d will the speakers next produce destructive
interference at the listener’s location? (c) After A starts moving away
from its original spot, at what distance d will the speakers first produce
constructive interference at the listener’s location?
Transcribed Image Text:4.50 m
А
В
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