Carnot cycle and parachute: what they have in common

1. Step 1. Carnot cycle — is a kind of — Thermodynamics. The main result of thermodynamics.
2. Step 2. Thermodynamics — uses — Conservation of energy. The first law of thermodynamics is the conservation of energy.
3. Step 3. Conservation of energy — is used in — Yo-yo. Potential → kinetic energy.
4. Step 4. Yo-yo — has part — Rope. A thread.
5. Step 5. Rope — is part of — Parachute. The lines are ropes.

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