Coulomb’s law and turbine: what they have in common

1. Step 1. Coulomb’s law — uses — Torsion balance. Measured with a torsion balance.
2. Step 2. Torsion balance — is used in — Universal gravitation. The Cavendish experiment — weighing the Earth.
3. Step 3. Universal gravitation — is used in — Hydroelectric power station. The energy of falling water.
4. Step 4. Hydroelectric power station — has part — Water turbine. Water turbines.
5. Step 5. Water turbine — is a kind of — Turbine. A kind of turbine.

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