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Is the density of a submerged submarine about the same as the density of a floating submarine?
The average density of a submerged submarine is about that of the water that surrounds it. It is said to have neutral buoyancy. But the average density of a floating submarine is less than the density of water, otherwise it would not float. (It could be argued that the density of a submarine is constant and that its characteristics as regards buoyancy are manipulated.)
A submarine has "empty spaces" inside the pressure hull. That's where the equipment that makes a submarine work is (along with the crew). When a boat (the submarine sailor's term for his vessel) is submerged, the whole volume of the vessel displaces a likevolume of water. This is true, except that the main ballast tanks are full of water; they have no air in them. The submarine is set up to be neutrally buoyant when it's under water. That way no "effort" or "energy" is spent trying to keep the boat from sinking or floating to the surface.
When a submarine is on the surface and the ballast tanks are filled with air, the whole boat floats. The extra air that has been put into the main ballast tanks has displaced the water that was in them when the boat was submerged. This extra buoyancy allows the boat to float and operate on the surface.
What else can I help you with?
The density of a submerged submarine is about the same as the density of?
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.
Does a floating object weigh more when underwater?
No, a floating object displaces its weight in water, creating an upward buoyant force equal to the weight of the water displaced. Therefore, the object weighs the same whether it is floating on the surface or submerged underwater.
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?
Why doesn't a rocks density change when submerged under water?
A rock's density remains the same when submerged under water because its mass and volume do not change in the water. Density is calculated by dividing an object's mass by its volume, and since both the mass and volume of the rock remain constant underwater, its density also stays the same.
Does a weighted air filled balloon with the same density as water float or sink?
Neither, it just stays submerged, provided its density stays the same as the water around.
If a cube is floating and half of it is in the water what is its density?
The density of the floating cube is equal to the density of the fluid it is floating in. This is because the cube is in equilibrium, meaning the weight of the cube is equal to the weight of the fluid it displaces. Therefore, its density is the same as the fluid's density.
If an object has the same density as the fluid it is submerged in the object will always?
Will always float with the top surface level with the water
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 flotations tanks its density decreases and it float. Why does its density decrease?
Density is weight divided by volume. Since the size of the hull stays the same, when the weight of the water is removed, the volume of the hull stays the same and the density is reduced.
What can you do with density?
Density is the measure of pounds per square inch it would be important if you designed tanks because you would need to know what density of the tanks armor it would need to be same as in a submarine.
Is the magnitude of buoyancy experienced by the objects constant for a particular liquid?
It depends on the objects' volume. Different objects that have the same volume, if submerged, experience the same buoyancy. The buoyancy is equal to the weight of the displaced liquit; in other words, volume (of submerged object, or of the submerged part) x density of the liquid x gravity.
Is the bouyant force of water proportional to its depth?
No. Water is incompressible. Buoyancy is determined by density, and being incompressible the density stays the same. Once an object is submerged there's no more buoyancy to be generated.
