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When the tanks are full of water they force O2 out of the tanks. Once the tanks empty out the water they will fill with gasses that in the water such as O2 or Co2. These gasses are palpably less dense than water so the submarine rises. I hope that helps.

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14y ago

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When a submarine pumps water out of its floatation tank its density decreases and it floats. Why does its density decrease?

To rise again, the submarine's weight must be decreased. Air is pumped into the ballast tanks to force the water out. The buoyant force acting on the submarine now exceeds the submarine's weight. With positive buoyancy, the submarine rises. The less weight an object has the more its density decreases. Hope that kinda helps?


How does a change in the density of water affect the floatation of a raw eggHow does a change in the density of water affect the floatation of a raw eggHow does a change in the density of water affect?

The floatation of a raw egg in water is influenced by the density of the water compared to the density of the egg. When the density of the water increases (for example, by adding salt), the egg may float because it becomes less dense than the surrounding water. Conversely, if the water's density decreases, the egg may sink, as it becomes denser than the water. Thus, adjusting the water's density can determine whether the egg floats or sinks.


If mass increases and volume stays the same then density decreases?

Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.


How does the density of Isopropyl alcohol change with temperature?

As temperature increases, the density of isopropyl alcohol decreases. This is due to the thermal expansion of the liquid, where the molecules move further apart, causing the density to decrease. Conversely, as temperature decreases, the density of isopropyl alcohol increases.


As a parcel of air increases in altitude its pressure will?

No, the density lowers. When air expands, the volume of area it takes up increases while the density decreases. The molecules move apart.

Related Questions

When a submarine pumps water out of its floatation tank its density decreases and it floats why?

because of density


When a submarine pumps water out of its floatation tank its density decreases and it floats. Why does its density decrease?

To rise again, the submarine's weight must be decreased. Air is pumped into the ballast tanks to force the water out. The buoyant force acting on the submarine now exceeds the submarine's weight. With positive buoyancy, the submarine rises. The less weight an object has the more its density decreases. Hope that kinda helps?


When a submarine pumps water out of its floatation tanks its density decreases and it floats. why does its density decrease?

Because the tanks are filled with air afterwards. Air has a lower density than water.


When a submarine pumps water out of its floatation tanks its density decreases and it floats?

Yes, when a submarine boat pumps water out of its flotation (not floatation) tanks, the submarine should rise.


When a submarine pumps water out of its floatation tanks its density decreases and it floats. why its density decreases?

The water is replaced with air which is not as heavy as water for the same volume.


When a submarine pumps water out of its floating tanks its density decrease and it floats why does its density decrease?

Density = mass / volume. If the mass decreases, the density decreases.


When a submarine pumps water out of its floatation tanks its density decreases and it floats. why does its density decreases?

Because the tanks are filled with air afterwards. Air has a lower density than water.


When a submarine pumps water out of its flotation tanks its density decreases and it floats. Why does its density decrease?

Density = mass / volume. If the mass decreases, the density decreases.


When a submarine pumps water out of its flotation tanks it and density decreased and float's does its density decrease?

Density = mass / volume. If the mass decreases, the density decreases.


When a submarine pumps water out of its floatation tanks its density decreases and it floats why does its density float?

Because the tanks are filled with air afterwards. Air has a lower density than water.


When a submarine pumps water out of its floatations tanks its density decreases and it floats Why does its density decrease?

Because the tanks are filled with air afterwards. Air has a lower density than water.


When a submarine pumps water out of its floatations tanks it density decreases and it floats. Why does its density decrease?

Because the tanks are filled with air afterwards. Air has a lower density than water.