Two tuning forks produce sounds of wavelengths 3.4 meters and 3.3 meters. Approximately what beat frequency is produced?

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Two tuning forks produce sounds of wavelengths 3.4 meters and 3.3 meters. Approximately what beat frequency is produced?Question 21 options:4.0 hertz3.0 hertz0.1 hertz1.0 hertz2.0 hertz