The vibrations from an \( 800 \mathrm{~Hz} \) tuning fork set up standing waves in a string clam...

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The vibrations from an \( 800 \mathrm{~Hz} \) tuning fork set up standing waves in a string clamped a: both ends. The wave speed in the string is known to be \( 400 \mathrm{~m} / \mathrm{s} \) for the tension used. The st? fing wave is observed to have four antinodes. How long is the string?
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