/u/Deadlifts_n_Riffs's posts in /r/askscience

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With enough gears and the proper ratios, would it be possible to create a hand-cranked generator that would power a city?

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Given enough gear ratios, is it theoretically possible to build a hand-crank generator that could power a city with minimal physical effort?

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Multivitamins - why do they contain 100+% of some nutrients and 20% of others? Why not just 100% across the board?

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Is electricity the “universal” power source?

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Vinegar, ammonia, and pet urine

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Will citric acid neutralize pet urine?

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Whatever happened to Graphene batteries? I remember exciting news for a while then nothing.

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
With enough gears and the proper ratios, would it be possible to create a hand-cranked generator that would power a city?	1
Given enough gear ratios, is it theoretically possible to build a hand-crank generator that could power a city with minimal physical effort?	1
Multivitamins - why do they contain 100+% of some nutrients and 20% of others? Why not just 100% across the board?	1
Is electricity the “universal” power source?	1
Vinegar, ammonia, and pet urine	1
Will citric acid neutralize pet urine?	1
Whatever happened to Graphene batteries? I remember exciting news for a while then nothing.	1