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Why is it that a needle may float on a clean water but sink when detergent is added to the water?
Wiki User
∙ 12y ago
Because the detergent reduces the surface tension of the water.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agothe needle sinks almost immediatly
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Does the needle float or sink in water?
A needle sink in water.
How does a needle float on water?
the way it float is surface tension!!
What makes a needle to float in water?
Water surface tension hold the needle on the water surface.
What will happen to a needle place in water?
It will float if placed carefully enough.
Why can a sewing needle can float on the surface of water in a glass.?
Surface tension
How can you break the attachment of molecules in the surface tension?
The surface tension of water can be broken by adding dishwashing detergent to the water. This can be demonstrated by filling a bowl with water, then floating a needle in it. This may sound almost impossible, but it can be easily achieved by placing the needle on a tissue, then carefully floating it on the water. When the tissue sinks, the needle should remain on the surface. It is prevented from sinking by the water's surface tension. Carefully add one drop of dishwashing detergent, and the needle will sink. You can prove this was due to the surface tension being broken by trying to float the needle again. If you added enough detergent this should be impossible, as detergent acts as a wetting agent and breaks the surface tension.
Why gas come from carburetor after you shut down?
The problem is most likely in the float bowl. The float could be bad. The likely cause is the needle valve that is control by the float is stuck, or dirt has gotten between the needle and needle seat. This is an easy fix. Carefully remove the float bowl. The float will be held in place by a pin. Remove the pin, and float. Check that there is no fuel in the float, and that it floats in gas, if not replace. The needle valve will come out with the float, as they are connected by a wire link. Make sure needle vale is clean, and able to move freely inside it's housing. Check the bottom of the housing at the needle seat to make sure it is clean of dirt. Reassemble, and you should be ready to go.
Why is float bowl drain hose leaking?
sounds like you have a float that is stuck. when the float stcks down it allows more gas into the carb. you may need to pull the carb to clean the float needle and seat.
What liquids can a needle float on?
A needle can be made to float on very still water.
Why does mikuni carb leak out overflow while not running?
either your float level is set too high or there is gunk between the float needle & seat inside the carb. open em up, set the float level to the proper specs. pull the needle & seat and clean & polish them. if the needle & seat are too far gone, order new ones and replace.
Can you float a needle?
Yes, you can float a needle I have done it before. It doesn't have to do with density though it has to do with surface tension.
How do you fix a stuck float on polaris 500?
replace the inlet needle and seat. If you cant replace the seat then clean with a q- tip.
How does float go in carburetors on 1978 gl1000?
in the carburetor float bowl, set at 21mm when sitting at closed position. measure from top lip edge of body to top of float. dont forget the needle and seat need to be clean
Does the needle float or sink in water?
A needle sink in water.
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!!
How does a needle float on water?
the way it float is surface tension!!
Can a needle float in soapy water?
Yes it is not possible. Because as soap is added then surface tension would get reduced and so possibility of float becomes less. When we carefully place the same needle on ordinary water floating is quite possible as water has more surface tension
