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A rubber ball without air sinks because it is denser than water, causing it to displace less water than its own weight. However, when the ball is filled with air, it becomes buoyant due to the air creating a positive buoyant force that is greater than the ball's weight, causing it to float.

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Q: Why rubber ball without air sink and with air float?
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Related questions

Does rubber ball float on oil?

it will, unless the specific gravity of the ball is greater that the oil, if it is, it will sink. But I doubt that it is


Will a rubber washer float or sink in corn oil?

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Will a solid ball float or sink?

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Does a bounce ball float in water?

No, bounce balls are typically made of rubber or plastic, so they are denser than water and will sink rather than float.


Does a rubber band float?

Yes, a rubber band will typically float in water due to its low density and buoyant properties. The surface tension of water is usually enough to support the lightweight and flexible rubber band on the surface, causing it to float rather than sink.


Why do rubber bands float sometime and sink sometime?

Rubber bands float or sink based on their density compared to water. If a rubber band is less dense than water, it will float. However, if it is more dense than water, it will sink. This can vary depending on factors like the size and shape of the rubber band.


Do rubber bands sink or float?

Rubber bands typically float on water because they are less dense than water. However, if the rubber band is tangled with another object or has absorbed some water, it may sink.


Whould an aluminum ball sink or float?

Depends on the medium, and whether the ball is solid or not. A solid ball would float on mercury, sink in water. If it were hollow enough (or filled with, say, cork) it would float in water.


Which property causes a ball to sink and a boat to float?

Density is the property that causes a ball to sink and a boat to float. If an object is denser than the liquid it is placed in, it will sink, while if the object is less dense than the liquid, it will float.


Why Does rubber float in oil?

Rubber has a lower density compared to oil, which causes it to float on the surface of the oil. This difference in density results in a buoyant force that pushes the rubber to float rather than sink.


Does rubber sink or float in saltwater?

Rubber typically floats in saltwater due to its low density. The buoyant force acting on the rubber is greater than its weight, causing it to float.


Why does a rubber ball float in water?

This might be best determined by experiment. While natural rubber is slightly denser than water and will sink, there will be some small amount of air trapped in a rubber band ball, reducing the density to some extent. Attempting to model and calculate the air content seems somewhat impractical without experimental data, and if you are going to experiment anyway, why not just find the answer directly?