2006-07-18 10:17:15 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
no,a bubble is hollow.
2006-07-18 10:20:45 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It depends on your definition of a "bubble."
Soap bubbles in air often have neutral buoyancy - just ask any child. Similarly, balloons are bubbles of a sort - and they may also have neutral buoyancy.
Recall that buoyancy is defined as the force of gravity on the fluid that is displaced by an object - if the force of gravity on the bubble equals the buoyant force on the bubble, there is "neutral buoyancy."
So all you need to do is define your substances, and you should be able to determine what the mass of the bubble needs to be (i.e., the mass of the shell enclosing it, if any, and the substance inside) to equal the mass of the fluid displaced.
2006-07-18 18:50:15 · answer #2 · answered by volume_watcher 3 · 0⤊ 0⤋
Not quite the right question.. In order to have neutral buoyancy it has to have the same effective density as the fluid its in. So you arent making a bubble of a gas and a fluid because fluids are a thousand times denser than liquids.
I think you are asking about making a bubble that doesnt move much. If it wants to move up the friction forces dominate out the buoyant forces. Thats a different but doable set of relationships.
2006-07-18 17:21:49 · answer #3 · answered by Curly 6 · 0⤊ 0⤋
Not usually because gas bubbles in liquids are less dense.
You can get air bubbles into cold honey or other really thick liquid and the bubbles seem to be neutrally bouyant but it's really just viscous liquid that keeps the bubble from moving
In outer space bubbles will be neutral bouyant in the liquid because there is little gravity
2006-07-18 22:32:26 · answer #4 · answered by SacBrian 2 · 0⤊ 0⤋
A neutrally bouyant "bubble" in water can be made with a mixure of Carbon Textrachloride (CCl4) and oil. Both the latter are immiscible with water, but miscible with each other. That means a blob of either will form a bubble if dropped in water. Oil is lighter than water and CCl4 is heavier, so a precise mixure of the two can be made that is neutrally bouyant.
2006-07-18 22:08:50 · answer #5 · answered by Dr. R 7 · 0⤊ 0⤋
sure, if you fill it with just the right density gas! The gas has to be less dense enough than air to create a large enough force to balance the weight of the bubble.
Small helium bubbles are quite frequently used in wind tunnel experiments because they can be neutrally buoyant.
2006-07-18 17:34:10 · answer #6 · answered by ObliqueShock_Aerospace_Eng 2 · 0⤊ 0⤋
depends on several factors
2006-07-19 11:42:30 · answer #7 · answered by sunshine25 7 · 0⤊ 0⤋