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Why can a sewing needle can float on the surface water in a glass?
Wiki User
∙ 6y ago
Yes if the surface tension of the water is not broken. If you are careful you can place a needle on the surface of the water in a glass. Also if you reduce the surface tension with detergent (just a very little is enough) the needle will sink because it's density is greater than that of the water.
NO (if the surface tension of the water is broken, a needle cannot float on the surface of water. This is because the needle has higher density than water (density is mass divided by volume).
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoa sewing needle can float on the surface of water in a glass because...
well if you just drop it in lightly then it will stay on the surface due to surface tension, but if you poke it below the surface it will sink because of it's mass.
Wiki User
∙ 13y agoBecause the density of that needle (Or its mass divided by its volume) is less than the density of water (which is 1000 kg/m^3).
Wiki User
∙ 12y agoThe needle's does not break the surface tension of the water.
Wiki User
∙ 12y agoTape the hole and it will sail on the water!
Wiki User
∙ 6y agoSurface tension can allow a sewing needle to float on the surface water.
Wiki User
∙ 12y agoBecause of the hydrogen bonding between water molecules, water has a high surface tension. This allows the needle to float on the surface of the water in a glass.
Wiki User
∙ 13y agoyes
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Can we use float cullet in container glass?
Cullets doesn't float on water.
Why is it difficult to write on glass with a pencil?
because there is no friction between pencils and glass and glass is harder than the lead in the pencil .and glass surface is smoother than the surface of paper
What is denser than water so water will float?
Anything that doesn't float in water is less dense than water, say iron? So if you drop an iron bar into a glass of water, you can say that the iron sinks or you can interpret it as the water floats? If you are referring to liquid, then mercury.
Can glass float on water?
Yes, glass can absorb water. Irving Friedman and others showed that Obsidian (volcanic glass) absorbs water very slowly, and the amount of water it has absorbed can be used to date the age of a fresh cut in this type of glass. The rate of absorption of water depends on a number of factors, including the silica content of the glass (SiO2), the amount of water already absorbed, and the temperature. These factors are not necessarily the only ones affecting this process, but my current work (the amount of water absorbed by volcanic glass from New Zealand) has not yielded answers yet as to the other factors. A ballpark estimate for rate of hydration would come from using diffusion rates of around 1-10 micrometers squared per 1000 years, as suggested by Friedman et al. (1993a)
Suppose you put a birthday caddle in a glass of water why will the caddle float on top of the water?
It will float on top because it is less dense than water.
Why can a sewing needle can float on the surface of water in glass?
Surface tension
Why can a sewing needle can float on the surface of water in a glass.?
Surface tension
Explain why a swing needle can float on the surface of water in a glass?
Due to surface tension, the upper surface of water acts like a stretched membrane which enables it to float a swing needle.
How can a sewing needle float on the surface of water?
The needle does not break the surface tension (meniscus). Get a small piece of toilet tissue and lay it on a glass of water. lay a needle on the tissue. The tissue will become sodden and sink, leaving the needle floating on the surface tension. Put the smallest drop of washing-up liquid on the water. The surface tension will be destroyed and the needle will sink. Try it.
Where would you see surface tension in the world?
It is relatively easy to float a sewing needle on the surface of the water in a glass. The sewing needle is steel, and steel is more dense than water, and should sink. But by carefully placing the needle on the surface of the water (lengthwise), it is not that difficult to make the needle float. It floats due to the surface tension of the water. If you are in the mood to experiment, try a paper clip as well. Make sure there is a little space between the different lengths of the steel so that none of the lengths of the paper clip touch each other. A picture of a floating paper clip can be found in the Wikipedia post linked below. You up for the challenge? Water in a pond or a slow moving stream or river exhibits surface tension that supports a number of organisms (like the oarsman or water strider) that "walk on water" and could not survive without the surface tension of the water for support. Links below are worth the look.
What is a general value for Surface Emissivity for 6mm float glass?
0.79
How can you make sand appear to float around in water?
This is a thin layer on the waters surface where all the water molecules try to crowd together. If something is light enough it will float on this layer if it doesn't break through the layer even though it is more dense than water. If you are careful you can do a neat trick. Get a glass of water (it has to be clean with no detergent left over from washing) and carefully place a needle on the surface and if you are very careful the needle will float on the surface. If you wipe it over with a magnet a few times before doing,XOXO, I HOPE THAT I SERV YOUYOUR WELCOME!!
What will happen to a needle if pinch of detergent is added to a water?
If you have floated a needle on the surface of the water in a glass then adding a little detergent will cause the needle to sink. This is because the presence of the detergent changes the surface tension of the water so that it can no longer support the needle.
What happened to the needle when you added 2-3 drops of the detergent solution?
If you have floated a needle on the surface of the water in a glass then adding a little detergent will cause the needle to sink. This is because the presence of the detergent changes the surface tension of the water so that it can no longer support the needle.
Is a sewing machine made of glass?
NO it is not made of glass in earlier times the sewing machine was made of metal. now it is made of plastic with glass in it
Who invented float glass?
Float glass was first invented by a company in England called Pilkington Glass.
If a raisin is dropped in a glass of champagne it will sink and settle down in the glass?
Yes, the raisin will sink into a glass of champagne, but not for long ... the bubbles from the champagne will inflate the dried raisin and it will float up to the surface.
