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Two speakers emit sound waves with frequency of 418 Hz. They are driven by the same oscillator so that they are in phase with each other. We place the speakers so that they are a few meters apart and facing each other. Along the line joining the two speakers, the sound waves from the two speakers are traveling in opposite directions. This creates a standing waves between the two speakers. How far apart are the antinodes in that standing wave? Neglect the effect of reflection of waves from the speakers. The speed of sound is 343 m/s

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