On a fairly cool rainy day when the temperature is 20^oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40^oC?
[coefficient of linear expansion of steel = 11 x 10^-6K^-1]

20.013m

20.009m

20.004m

20.002m

Correct Option

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2 years ago

11 years ago

u can still use d equation L2=L1(1+a©)

=20(1+11x10^`6(40-20)

=20.0044

5 years ago

please

ceoofwahala

20th June, 2026

Chemistry

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ASSAAS

20th June, 2026

English Language

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infinitehoaxx

21st May, 2026

Computer

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On a fairly cool rainy day when the temperature is 20oC, the length of a steel railroad track is 20m. What will be its length on a hot a dry day when the temperature is 40oC? [coefficient of linear expansion of steel = 11 x 10-6K-1]