Question

Explain why give reason to support your answer???
a) air is used to inflate tyres.
b) steel is used to make railway tracks ..

Answer 1

heyy dear ur answer........

1.--Not only air , you can use other gases specially to inflate the tyres. Because of its availability it is used to inflate tyres. And air/ gases used to inflate the tyres because they can be compressible upto some extent of pressure.

2.because--Modern track typically uses hot-rolled steel with a profile of an asymmetrical rounded I-beam. Unlike some other uses of iron and steel, railway rails are subject to very high stresses and have to be made of very high-quality steel alloy.....
                       
                                i hope it will help u...

          @kundan