WebJun 18, 2011 · a 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... WebDec 26, 2024 · An iron needle when placed horizontally on water, floats (sits) on the surface of the water. The phenomenon is usually justified as "surface tension". From what I understand, for the needle to float …
Chapter 3 Flashcards Quizlet
WebExplain why. Think about surface tension, and what causes it. A steel needle placed on a water surface floats. Why? A typical sewing needle floats on water when its long dimension is parallel to the water's surface. Estimate the needle's maximum possible mass, assuming the sewing needle is two inches long. (Hint: T WebAnswer: Solution: The density of iron is more than the density of water, so the weight of iron is more than weight of water displaced by it and nail sinks. While the shape of an iron ship is made in such a way that it displaces more weight of water than its own weight. Secondly, the ship is hollow and the empty space contains air which makes ... svedka mango pineapple
Q22 Explain why an iron needle sinks in water but a ship made …
WebJan 26, 2024 · If the needle you're using is too big to push through the cork, you may simply rest it on top of the cork. If you don't have a cork coin, use another lightweight object that floats, such as a leaf. 4 Float the magnet. Place the magnetized needle on the surface of the water in the bowl. WebDec 18, 2015 · Why does a needle sink but a boat float? The total weight of the surface area of a boat is less than than the weight of a body of water of the same size (buoyancy), so that is why it floats. WebBecause of surface tension needle floats on water. But if put needle on water with some height it will sink in it this is because we are adding gravity force also. If you put needle slowly on top layer of water it will float. Before that you have to know what is cohesion and adhesion. Cohesion means the action molecules of forming United whole. bar ttdi