A submarine
because the submarine has the water tank.when the tank is filled then submarine sink in the water.and when the tank is empty then submarine float in water.
put water in to let it sink... then put air into it to let it float...
both. they are able to control it
a submarine has a water tank. when the tank is filled then submarine sink in the water. and when the tank is empty then submarine float in water. use the formula density= mass / volume as mass increases(when the tank is full of water), the density of the submarine increases and it submerge into the water and vice versa.
The dnsity of a submerged submarine is the same as the density of the water if the density of the submarine was grater it will sink, if the density was less it would float.
A submarine is made from strong material so it can withstand the tremendous pressure at depths.
You drag the word "submarine" itself onto the submarine. Then you wait for it to sink.
This displacement of water creates an upward force called the buoyant force and acts opposite to gravity, which would pull the ship down. Unlike a ship, a submarine can control its buoyancy, thus allowing it to sink and surface at will.
it will float as long as it is not fully covered water.
It takes on water to alter its density to greater than that of water, allowing it to sink, pumping the water out reverses the state, allowing it to rise.
does Arsenic float or sink