what is force of adhesion and force of cohesion? explain with an example. Also explain the causes which give rise to surface tension?
Asked by mehreennisar | 6th Oct, 2010, 07:55: PM
Adhesion and cohesion, attractive forces between material bodies. A distinction is usually made between an adhesive force, which acts to hold two separate bodies together (or to stick one body to another) and a cohesive force, which acts to hold together the like or unlike atoms, ions, or molecules of a single body. However, both forces result from the same basic properties of matter. A number of phenomena can be explained in terms of adhesion and cohesion.
For example, surface tension in liquids results from cohesion, and capillarity results from a combination of adhesion and cohesion.
Surface tension, is the tendency of liquids to reduce their exposed surface to the smallest possible area. A drop of water, for example, tends to assume the shape of a sphere.
Answered by | 8th Oct, 2010, 05:55: AM
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