Submarines can go downward because they flood their buoyancy tanks with water. This reduces the buoyancy of the sub, allowing it to go down. To rise again, the water is pumped out of these tanks.
Arsenic is denser than water, so it will sink in pure water.
Plutonium is a dense metal and will sink in water due to its high density.
Yes and no. Rubber bands can float and sink in water. They will float on the water for awhile and then will sink. But not all the time the rubber bands will float on the water for awhile. Sometimes it will immediately sink.
A short piece may be supported by the surface tension of water, but a coil of copper wire would sink.
Sink or float... on what? - The general rule is that an object will float if it has less density than the fluid (gas or liquid) in which it is placed.
Ships try to avoid sinking, submarines sink on purpose...
Submarines are designed with enough ballast and control systems to allow them to submerge and surface as needed.Surface ships are designed only with enough ballast and control systems to keep them on the surface. While they can sink just as well as submarines can, their ability to re-surface without a salvage operation is non-existent.
They caused anxiety and sink ships.
Ships don't sink because they are more boant then the water they float on. Ships don't sink because they are more boant then the water they float on.
sink allied supply ships to England
They were at war with each other.
To sink enemy vessels, ships or submarines.
Because they don't sink.
They were used mainly to sink enemy transport ships.
To stop supplies from reaching England
IJN & USN subs went looking for ships to sink.
They rise to the surface when air is pumped IN. They sink when air is let out