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Can gravity be utilized to generate hydropower in a clean, repeatable fashion without rivers or lakes? [closed]
I came up with this idea today and am just wondering if it is feasible. It is much easier to communicate via images so I drew the attached image to convey it. The key concept is rolling a ball in ...
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How much electric energy is created by an 80kg man making a step at flat surface while walking at the normal speed (5km/h) [closed]
Even a rough approximation would be helpful. But of course a precise calculation would be great :). Thank you all in advance very much for your help!
By the way - do you have any suggestion for ...