IB skill practice

Use standing wave and resonance relationships

Paper 1, Paper 2 5 marks Difficulty 4

Harmonic frequency multiple

The fundamental frequency of a resonating string in a ultrasound calibration is \(105\,\text{Hz}\). Calculate the frequency of harmonic \(n=5\). Use the diagram labels before calculating the requested value. Enter the numerical result and choose the interpretation that matches the wave physics.

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