physics!
posted by jean .
The New River Gorge bridge in West Virginia is a steel arch bridge 518m in length. How much does the total length of the roadway decking change between temperature extremes of 20.0C and 35.0 C? The result indicates the size of the expansion joints that must be built into the structure.
average linear expansion coefficient for steel: 11x10^6
deltaL=L*deltaT*coeffcient
Delta Temp here is 55C, you are given L, and the coefficent. I assume the coefficent is in Celcius, not F.
yeah. sorry.
i got the answer.
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