A concrete highway is built of slabs 11 m long (20 ∘C). Part A How wide should the expansion cracks between the slabs be (at 15 ∘C) to prevent buckling if the range of temperature is - 30 ∘C to 50 ∘C? Express your answer using two significant figures.

Explanation:

We are given that

Length of slab=L=11 m

We have to find the  width of expansion.

We know that by linear expansion

Where

Substitute the values

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im doing peak rn so sry if its wrong

the inner core.

good luck: )

klicker