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How does a submarine change its buoynacy so it can float or 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.
Is the force of the water on the piers the same at the water surface as it is 30m below the surface?
No, it would be less due to compression by weight of the surface area water. Every so many feet (meters) down, another "atmosphere" of pressure is exerted. Ergo, water at the seabed would exert more pressure on the pier than the water at the surface.
What was the buoyancy of the very first submarine?
The very first submarine, known as the "Nautilus," was designed by David Bushnell in 1775. Its buoyancy was primarily controlled by allowing water to fill a ballast tank, which would displace air and cause the vessel to sink. When it needed to surface, the water would be expelled, allowing the submarine to rise. The design was rudimentary compared to modern submarines, but it laid the groundwork for future underwater vessels.
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.
Can a submarine move itself in space?
No. A submarine's propeller relies on the water around it for something to push against. As space is a vacuum, the propeller would have nothing to push against, ergo the submarine would have no thrust.
What is the apparent weight of a submarine that weighs 1256N and it displaces 1562N of water?
The apparent weight of the submarine is calculated by subtracting the weight of the water it displaces from its actual weight. In this case, the apparent weight of the submarine would be 1256N - 1562N = -306N. This negative value indicates that the submarine will feel lighter when submerged in water due to the buoyant force acting on it.
What will float then sink then float?
[I've heard this question asked as a kind of a twisted riddle, the answer to which is, "A drowning person": When a person is first in the water, they have air in their lungs and will float. As they drown, their lungs fill with water and they sink. Then, as their body decays and gases expand, the body floats to the surface -- LibertarianLaw]A submarine or a ship can float because the weight ofwater that it displaces is equal to the weight of the ship. 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.To control its buoyancy, the submarine has ballast tanks and auxiliary, or trim tanks, that can be alternately filled with water or air (see animation below). When the submarine is on the surface, the ballast tanks are filled with air and the submarine's overall density is less than that of the surrounding water. As the submarine dives, the ballast tanks are flooded with water and the air in the ballast tanks is vented from the submarine until its overall density is greater than the surrounding water and the submarine begins to sink (negative buoyancy). A supply of compressed air is maintained aboard the submarine in air flasks for life support and for use with the ballast tanks. In addition, the submarine has movable sets of short "wings" called hydroplanes on the stern (back) that help to control the angle of the dive. The hydroplanes are angled so that water moves over the stern, which forces the stern upward; therefore, the submarine is angled downward.
What type of vehicle would you have to take to travel to saturn?
Scientists believe that the gas giants (Jupiter, Saturn, Uranus, and Neptune) have no actual solid surface. So, the insides could be water so you would take a submarine.
When a submarine pumps water out of its inflation tanks its density decreases and floats.why does its density decrease?
It is not the matter of density. When inflation tank is filled with water then the weight of submarine is more than the weight of the displaced water. So submarine is in the sinking condition. As water is pumped out then weight of displaced water which is known as Buoyant force would be more than the weight of the submarine. So it would float.
What are reasons why you could not live on Europa?
While it has lots of water, the lack of a breathable atmosphere, lack of surface pressure, and presence of surface temperatures averaging 170 degrees C below zero... you couldn't live on the Europan surface for long. Get below the surface. There is almost no atmosphere on Europa and the surface temperatures average -170C. Therefore the only route for long term human survival would be to get into the potential subsurface ocean and move around in a submarine. While water would be ample and oxygen could be created from that water, the lack of food would quickly become a problem.
What happens to the buoyant force of a submerged submarine when water is taken into its tanks and it dives?
When water is taken into the tanks of a submerged submarine, its total volume increases, displacing more water and increasing its buoyant force. This increases the upward force acting on the submarine, causing it to rise in the water or maintain a shallower depth.
Would you keep your books on a continental shelf?
No you would not. It is the edge of a continent on the seabed.
