Question: 3) In the Standing Waves lab, a wire has mass 2.47 g and is 133.7 cm long. A mass of 350 g hangs from

3) In the Standing Waves lab, a wire has mass 2.47 g and is 133.7 cm long. A mass of 350 g hangs from it. It is vibrating in its third harmonic when driven at 77.0 Hz. What is the active length of the wire?
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