A submarine can sink and float in water because it has ballast tanks that can be filled with water to make it sink and with air to make it float. By adjusting the amount of water and air in the ballast tanks, the submarine can control its buoyancy and stay submerged at a desired depth or rise back to the surface.
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.
put water in to let it sink... then put air into it to let it float...
The buoyancy force on a submerged submarine equals the weight of the water displaced by the submarine. This force acts in the opposite direction to the gravitational force, allowing the submarine to float or sink in the water.
The submarine will float when its weight is equal to the upthrust acting on it. This is because the upthrust force pushing the submarine upwards is equal to the weight of the water displaced by the submarine, resulting in a state of equilibrium where the submarine neither sinks nor floats.
anything that can float on water, unless its a submarine
Landmines are positioned under earth and leaves. A mine for a submarine hangs in the water below the water surface, or is ejected from a ship's deck to float down to the depth of the submarine.
A submarine
The density of a submerged submarine is about the same as the density of the fluid it is submerged in, which is typically seawater. This allows the submarine to float or sink based on its buoyancy and weight.
A submarine floats and sinks by adjusting its buoyancy through the use of ballast tanks. When the submarine wants to sink, it fills these tanks with water, increasing its weight and causing it to descend. To float, the submarine expels the water from the ballast tanks, replacing it with air, which decreases its weight and allows it to rise. This ability to control buoyancy enables submarines to navigate at various depths in the water.
the ability of the submarine to float
A submarine sinks as it fills its' ballast tanks with water. Then it uses pressurized air to empty them and float again.