- #1

Aleisha

- 25

- 0

## Homework Statement

A concrete driveway is built from identical slabs of concrete, as shown below, which have a length,

*L*, of 3.18 m long at 17.3 C. The concrete slabs have coefficient of linear expansion of 1.20 x 10-5 K-1 and are laid in an area where the temperature ranges from -29.8 C to 42.6 C.

Calculate the minimum lengthwise gap (

*Δx*) that should be left between the tiles when they are laid to ensure that the tiles do not buckle when the temperature changes.

## Homework Equations

Change in length=coefficient of linear expansion x original length x change in temp (Kelvin)

## The Attempt at a Solution

Change in length (x)= (1.20e-5) x 3.18 x 72.4

=2.76e-3m

Answer was wrong but am confused as to how else to do it with any other equation i think i may have made an error with conversions or values needing to be used?