Answer:
The answer is D. density.
A windmill produces wind without electricity. wind blows on a windmill and it and that’s how it produces wind. You can put a windmill in anywhere outdoors (ex. Deserts or plains)
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Hope this helped you:)
The total work is
(mass of the elevator, kg) x (9.8 m/s²) x (9.0 m) Joules .
