no
If she is completely immersed, there would only be a change if the water changes density (unlikely) or she changes her volume (also unlikely) as the buoyancy force is the product of her volume under the water, the density of the fluid and gravitational acceleration. If none of those change, then the buoyancy force will not change.
Salt water is denser than fresh water. Since the buoyant force is equal to the weight of the displaced liquid or gas, an object of a certain volume will have more buoyant force pushing it up in salt water than in fresh water. It's sort of the same reason we can float on water but not in the air. Air is so much less dense than water that to float in it we need to displace a volume of it equal to the volume of a hot air balloon.
In physics, buoyancy is the upward force that keeps things afloat. The net upward buoyancy force is equal to the magnitude of the weight of fluid displaced by the body. This force enables the object to float or at least seem lighter.
As the temperature of a gas increases, so does the volume.
Water helps lift an objects via the buoyancy force. The buoyancy force is equal to the weight of water displaced by the volume of the submerged object. If this buoyancy force is equal to the weight of the object, the object will float in that position. If the object is completely submerged and the resulting buoyancy force is less than the weight of the object, it will continue to sink.
underwater your lung become a balloon and as much air it hold as much positive buoyancy effect it makes. We are using our lung underwater to maintain our buoyancy. That is why you should follow the rule of "Never Hold a breath" as if you did and assented fast your can damage your lung
If the mass stays the same, then when an object gets larger, its density decreases. The larger density=the more bouyancy
underwater your lung become a balloon and as much air it hold as much positive buoyancy effect it makes. We are using our lung underwater to maintain our buoyancy. That is why you should follow the rule of "Never Hold a breath" as if you did and assented fast your can damage your lung
volume and weight
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.
Reserve buoyancy is the watertight volume a ship has above the waterline.Buoyancy is the upward force on a ship derived from the displacement of a weight of water equal to the weight of the ship (produced by watertight volume below the waterline).
The amount of buoyancy an item has is determined by its weight in comparison to its volume (or simply put, its density) The less dense it is, the more buoyant it is. For a full explanation of how buoyancy works go to the related question "What is the buoyancy principle?" in the Related Questions section below.
volume displaced and the specific weight of the substance
The upthrust depends on the volume of object if volume is more the liquid displaced will be more and the force per unit area will increase and density is equal to mass per unit volume so by density the buoyancy.
Because buoyancy is a property of fluids, and not the object immersed in them. By comparing densities, you get that buoyancy is equal to the weight of the fluid displaced, because the volume of an object is equal to the volume displaced.
Yes it does because depending on the materials of the boat and how much their mass is can change the buoyancy of the toy boat. Boat can be designed to have less volume in order for it to have less density and be able to float. So if the material's mass is alot if can make the boat sink. If the material's mass is not alot then it can help the boat float. If the shape is designed to have more volume than mass it will float. If not then it will sink.
The difference between an object's weight, and the weight of water with the same volume as the object.