In Fig. 23-3, S 1 and S 2 are identical sound sources. They send out their wave
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In Fig. 23-3, S1 and S2 are identical sound sources. They send out their wave crests simultaneously (the sources are in phase). For what values of L1 − L2 will constructive interference obtain and a loud sound be heard at point P?
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S₂ ( S₁ G L2 L₁ Fig. 23-3 P
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