Resonator tubes and bicycle: what they have in common

1. Step 1. Resonator tubes — is part of — Xylophone. They amplify the sound of the bars.
2. Step 2. Xylophone — uses — Resonance. Resonating bars.
3. Step 3. Resonance — is used in — Violin. Resonance of the body.
4. Step 4. Violin — uses — Friction. The bow sets the string vibrating by stick-slip friction.
5. Step 5. Friction — is used in — Bicycle brake. Pads press against the rim or disc and shed speed through friction.
6. Step 6. Bicycle brake — is part of — Bicycle. Brakes stop the bicycle.

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