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The coefficient of linear expansion of s...

The coefficient of linear expansion of steel is `1 xx 10^(-5)``/^@C` . How much expansion should engineers anticipate in a 2000 m steel bridge, if it undergoes a change in temperature from `0^@C` to ` 30^@C` ?

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Here it is given that
`alpha = 1 xx 10^(-5) per^@C, Delta theta = 30^@ C-0^@C = 30^@C`.
`l_1 = 2000 m` . Hence the expansion to be anticipated is given by
`Delta l = 2000 m xx 30^@C xx 1 xx10^(-5) per^@C=0.6m`.
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