explain why the following metals and nonmetals are suitable for use only i) Aluminum is used to make ladder ii) copper is used to make electric wire iii)diamond is used in glass cutting iv)nylon ropes are used in Parachute
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Answer:
(i)Perhaps the leading characteristic of aluminium ladders is that they have a superior strength-to-weight ratio. This makes an aluminium model easy to transport and store as well as much less expensive to produce than ladders made from other materials. Aluminium products, such as ladders, can weigh as much as 50% less.
(ii)Copper has low resistivity, and therefore is an excellent conductor. Copper is also less oxidative than other metals.
(iii)Since diamonds are the hardest known substance having hardness set to 10, while glass which are used on windows have a hardness of 5.5. What this means is that any material which has hardness within a range from 5.5 to 10 can be used to cut glass.
(iv)Nylon fabric for parachutes is woven in a specialized manner with extra thick threads to create a pattern of small squares – this is known as ripstop nylon. ... Terylene - A type of polyester fabric that is now being used as a material for parachutes as it is very strong and heat resistant.
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