0
What else can I help you with?
Why can a sewing needle can float on the surface water in a glass?
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).
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
Why needle do not flow on water?
Because needles density is higher than water
How do you find a surface tension by dripping silicone oil from a needle inside the water?
i am doing this experiment to find the surface tension. as i am using silicone oil and water. the needle is dipped in the water and produced silicone bubble and took images. i found the angle but i don't know which equation to use. please if anyone can help me out with the equation. thanks
How do you explain surface tension to a child?
To *demonstrate*, float a dressmaker's pin or a needle on water. If you can do it safely, you can also float an old-fashioned razor blade. Then just tap them and sink them. That should get the conversation going.... ... and you can even have fun dragging them around the container with a magnet, plus - if you magnetise the pin/needle - you've got a rudimantary compass. p.s. the reason you get badly injured/ killed falling from altitude into water *is not* surface tension - pleeassse don't spread that myth!
What happen if the needle place on a small tissue paper and very gently put the paper on the surface of water?
The tissue paper will likely float on the water's surface as long as the needle does not break through the paper. This is due to surface tension, which allows light objects to float on water.
What makes a needle to float in water?
A needle can float on water due to surface tension. When the needle is carefully placed on the surface of the water, its weight is not enough to break the surface tension created by the water molecules, causing it to float.
Why when you put the needle in the water it will going down?
When a needle is placed on the surface of water, the surface tension of the water causes it to be attracted to the needle, creating a depression in the water surface underneath the needle. This results in a downward force acting on the needle, causing it to sink into the water.
Why would a needle flaot on the water?
A needle can float on water due to surface tension. The surface tension of water is strong enough to support the needle and prevent it from sinking, as long as the needle is carefully placed on the water and doesn't break the surface tension.
Why can a sewing needle can float on the surface water in a glass?
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).
What will happen to a needle place in water?
A needle placed in water will float due to surface tension. The surface tension of water allows the needle to be supported on the surface rather than sink.
Why does a solid needle placed horizontally on the surface of the water float?
The surface tension of water creates a layer that the needle rests on, despite being denser than water. The needle's weight is dispersed over a large enough area that it balances the upward force of surface tension. This allows the needle to remain afloat on the water's surface.
How does a sewing needle float on water but if you add soap it sinks?
Surface tension. Same phenomena that makes water form beads and droplets on some Surfaces acts like a skin on the water. If laid down gently, something like a needle can be carried by this skin. Soap destroys the Surface tension - one of the reasons why soap helps in getting things Clean - and the needle drops through.
What has to have more density for an object to float on water the object or water?
Normally the water - to float and object has to displace a volume of water equal to its mass. If its density is greater than that of water, the maximum mass of water it can displace is its own volume which, as the water is less dense that it, will have less mass than the object and it will sink. However, for small light objects the surface tension of water comes into play - it is possible to float a steel sewing needle (with a density greater than water) on water by gently dropping a clean needle on its side onto the water surface so that it does not break the surface tension. With a needle floating, adding a few drops of washing up liquid to the surface reduces the surface tension and the needle will then sink.
Does needle float on water?
Yes, a needle can float on water if it is carefully placed on the surface due to surface tension. However, if the needle is pushed down into the water, it will sink due to its density being greater than that of water.
Why needle with grease float on water surface?
The needle with grease floats on water because the grease creates a waterproof barrier around the needle. When placed on water, the surface tension of the water is able to support the needle and grease due to the decreased contact between the needle and water. This phenomenon is known as the "floating needle trick."
Why can a sewing needle can float on the surface of water in a glass.?
A sewing needle can float on the surface of water due to a property called surface tension. Water molecules at the surface are more attracted to each other than to the air above, creating a "skin-like" barrier that can support the weight of the needle. This allows the needle to stay afloat instead of sinking.
