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Sound -how does it originate? What actually causes sound ? and why do we hear sound ? Science of sound is melodious provided you understand it.  Is It is a mechanical wave composed of frequencies within the range sound  of hearing and of a level sufficiently ...

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Synthetic fibers  is a natural fiber obtained from the cotton plant .Synthetic fibers are made through a number of processes using  petrochemicals. A polymer is made up of many repeating units called monomers.Synthetic fibers also known as artificial fiber is a threadlike material  do not exist naturally. Watch the Video on Synthetic ...

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