Physics

Problem

The density of aluminium is

2.70\,\text{g\,cm}^{-3}

at 15 °C. If its coefficient of volume expansion is

7.5\times10^{-5}\,\text{K}^{-1}

, at what temperature will its density reduce to

2.65\,\text{g\,cm}^{-3}

? Give your answer to the nearest degree Celsius.