Frying pan body and electric generator: what they have in common

1. Step 1. Frying pan body — is part of — Non-stick pan. An aluminium body.
2. Step 2. Non-stick pan — is made of — Teflon. A Teflon coating.
3. Step 3. Teflon — uses — Friction. A very low coefficient of friction.
4. Step 4. Friction — is used in — Air brake. Brake shoes slow the wheels through friction.
5. Step 5. Air brake — is part of — Diesel locomotive. Air brakes.
6. Step 6. Diesel locomotive — has part — Electric generator. The generator powers the traction motors.

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