/u/temptingtime's posts
If our fingers are operated by tendons in our forearms, why is it hard to move your fingers when they get cold?
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If something is harder (Mohs scale) than something else, how could it ever be scratched by the 2nd object?
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If there were no particulates in the ocean (basically if the entire ocean were clear, distilled water), how far would light from the sun be able to penetrate?
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Why does 80 degree air feel hot against your skin but 80 degree water feels chilly? What if the air had 99% humidity?
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Can you either increase or decrease water's surface tension without adding a different substance to it? (Ex. Oil)
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