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How prairie dogs use the Bernoulli’s principle.
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How prairie dogs use the Bernoulli’s principle.
In order to ensure sufficient oxygen within their burrow, one of the entrances is built with a raised mound of dirt, while the other is not. This determines different wind velocities and different pressures + natural ventilation
有趣
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twitter.com)
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Massimo
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"This was filmed last Wednesday afternoon at Riverside Veterinary Clinic in Indianapolis, Indiana. The officer is Sergeant Paul Greer. He's 41 years old. Fourteen-year veteran of the Indianapolis Metropolitan Police Department. The dog is Bruno. A ten-year-old German Shepherd who
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"This was filmed last Wednesday afternoon at Riverside Veterinary Clinic in Indianapolis, Indiana. The officer is Sergeant Paul Greer. He's 41 years old. Fourteen-year veteran of the Indianapolis Metropolitan Police Department. The dog is Bruno. A ten-year-old German Shepherd who
时政
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twitter.com)
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Elon Musk: As a system, Starship is thousands of times more capable than Saturn V.
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Elon Musk: As a system, Starship is thousands of times more capable than Saturn V.
“Starship is 2.5 times the thrust of a Saturn V. Saturn V was the largest rocket ever to reach orbit. This is 2.5 times more power than that, and we build one a month. And they're meant to be
btc
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twitter.com)
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