https://padlet.com/21ravimurad/kzxqq62v6xliz5pf Ravi Ceregatti Murad, Otávio Narita. Y8CD en-us 2020-09-15 20:39:48 UTC 2020-09-22 20:06:01 UTC hello@padlet.com https://img.icons8.com/color/452/submarine.png 21ravimurad https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/749661330 A submarine is a vessel whose idea is to have total control over how it floats or emerges

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It works by means of air valves that control its density. When he wants to sink the tanks are filled with water to compress the air, and when they want to go up they put the air in to expel the water and become less dense]]> 2020-09-17 19:07:42 UTC https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756730007 21ravimurad https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756769320 2020-09-17 19:20:02 UTC https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756769320 21ravimurad https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756773485 2020-09-17 19:21:26 UTC https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756773485 21ravimurad https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756813521 2020-09-17 19:35:00 UTC https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756813521 21ravimurad https://padlet.com/21ravimurad/kzxqq62v6xliz5pf/wish/756834799 Submarines hydraulic systems utilizes a type of oil that is lubrificating, fast, and doesn´t freeze.

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