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An unopened water bottle contains a small pocket of air, allowing it to float. If the water bottle were to have this air removed, its buoyancy would be determined by the purity of the water inside and outside of the plastic.
buoyancy
density water's density is 1.00 g/c3 and the plastic bottle is less (plus it also has to with buoyancy)
Buoyancy
Buoyancy affects a boat by keeping it "on" the water, not "under" the water.
It depends on the volume of water in the bottle and if it is treated, spring or distilled water.
That would depend on the buoyancy of the feathers.
Salt actually increases buoyancy.
buoyancy has to deal with density, gravity, air, and water
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no, buoyancy is when something floats on water
No. Buoyancy refers to the ability to float in water.