U (a) What is surface tension? Explain the phenomenon in terms of intermolecular
forces.
(b) Describe a simple experiment to demonstrate
the surface tension of a liquid.
(c) State three examples to illustrate the effects
of surface tension.
(d) Why does water wet a clean glass surface
whereas mercury does not?
(e) State two methods by which the surface
tension of a liquid may be reduced.
(SSCE)

6 cos 34, 6 sin 34 trig

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

the given statement is true.

sensory memory lasts for a fraction of seconds before the information is lost. it is the shortest -term memory and can be called as an element of memory. example: when we look at something and remember what it looks like, is just a second of observation. it degrades very quickly. it can also be considered as the process of perception rather than considering it as a memory.