Physics

Problem

A solid iron block has a density of

7800\,\text{kg m}^{-3}

25^{\circ}\text{C}

. Its coefficient of volume expansion is

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

. Assuming no change in mass, what will be its density after it is heated to

75^{\circ}\text{C}

? a)

7814\,\text{kg m}^{-3}

7786\,\text{kg m}^{-3}

7758\,\text{kg m}^{-3}

7800\,\text{kg m}^{-3}