Submarines can dive from the surface of the water to depths of up to 1,200 feet, then can rise to the surface again, but why can they do this over and over again? When they put water in the compartments to sink the sub, where does the air go? When they pump out the compartments to rise to shallower depths, where does the air come from? After all, they are under water. So, how is a submarine able to do all of this?
Also, can anyone help me find a diagram from a website that explains all of this?
2007-10-16 16:47:07 · 2 answers · asked by Sarah S 3 in Science & Mathematics ➔ Physics
it has something to do with air pressure
2007-10-16 17:07:32 · update #1
i also need the reference site from where u got the information
2007-10-16 17:08:25 · update #2
See reference supplied and have fun.
2007-10-16 17:00:20 · answer #1 · answered by Edward 7 · 1⤊ 0⤋
Submarines are equipped with a number of tanks, and a large air compressor. When the submarine dives, some of the tanks are vented so that water can enter; this increases the effective mass (without changing the displacement) so the submarine descends. (The descent is assisted by engines and diving planes.) When the submarine is to rise, high pressure air is pumped into the tanks, expelling the water and decreasing the effective mass. With the submarine now lighter than the water it displaces, it will rise.
2007-10-17 00:06:44 · answer #2 · answered by Anonymous · 1⤊ 0⤋