The New River Gorge bridge in West Virginia is a 518-m-long steel arch. How much will its length change between temperature extremes

Hi,

Answer:

Coefficient of thermal expansion of steel = 14*10^-6 K^-1

so delta L = Lalpha*deltaT

=518*14*10^-6*(31+17)

=0.348096 m

=34.8096 cm

wrong

dear here its 100% correct,

Coefficient of Thermal Expansion Steel=C ~ 12 x10^-6 KRef: Wiki: http://en.wikipedia.org/wiki/Coefficient... The equation for linear expansion (e) is ..e = Lo.α.∆θ .. (in m)α = coef.of linear expansionLo = original length in m∆T = temperature change in ºC∆L = αLo∆T∆L = (12e-6)(518)(31– –17)∆L = (12*e-6) (518)(48) .. .. ►∆L = 0.2983 m = 29.836 cm

BEST OF LUCK !

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