Physics

Problem

(a) Rank the speed of sound in the following cases from lowest to highest: (i) air at

0\,^{\circ}\text{C}

(ii) air at

25\,^{\circ}\text{C}

(iii) sea water at

25\,^{\circ}\text{C}

(iv) an aluminium rod at

25\,^{\circ}\text{C}

(b) Give two physical reasons to support the order you have chosen.