Back(II) A scuba tank, when fully submerged, displaces 15.7 L of seawater. The tank itself has a mass of 14.0 kg and, when “full,” contains 3.00 kg of air. Assuming only its weight and the buoyant force act on the tank, determine the net force (magnitude and direction) on the fully submerged tank at the beginning of a dive (when it is full of air) and at the end of a dive (when it no longer contains any air).
How is the density of a floating object () related to the density of the fluid () it is floating in?
What causes a water strider to be able to walk on water?
Which of the following best explains why a small coin can sometimes float on top of the water in a glass, even though its ?
Why does the buoyant force act upward on a submerged object?
When heavy cargo is placed on a ship, how does the ship remain in isostatic equilibrium according to the principle of buoyancy?
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.650 m3 and the tension in the cord is 1120 N. The cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?
Fill in the blank: An object is most likely to sink in water if its average density the density of water.
The tank shown in FIGURE CP14.73 is completely filled with a liquid of density ρ. The right face is not permanently attached to the tank but, instead, is held against a rubber seal by the tension in a spring. To prevent leakage, the spring must both pull with sufficient strength and prevent a torque from pushing the bottom of the right face out. What minimum spring tension is needed?
For an object to float in water, what must be true about its weight compared to the weight of the water it displaces? and ?
A person could float most easily in water that has which characteristic?
In the context of buoyancy, does the volume of an object alone determine whether it will float or sink in a fluid?
If the buoyant force exerted by water on a stick () is less than the weight of the stick (), what will happen to the stick when it is placed in water?
A homogeneous rectangular gate is ft wide and ft long, and it weighs lb. The gate is hinged along its top edge and is submerged vertically in water so that its top edge is at the water surface. What is the minimum depth of water above the bottom edge of the gate required for the hydrostatic force to just begin to open the gate?
Why is it easier to float in saltwater than in freshwater?