Question

If a 1,200 m bridge is built at a temperature of 21C, how many meters must be allowed for thermal contraction if the temperature might reach -15 C?

alpha = 11 10^-6 1/C

Show with diagram

A. 0.175   B. 0.29 C. 0.475 D. 0.524 E. 1.42

Answer 1

in figure "temperature" is the changes in temperature.