Physics

Problem

In a laboratory, the speed of longitudinal sound waves in a steel rod is measured to be

5.0\times10^{3}\,\text{m s}^{-1}

. If the density of the steel is

7.8\times10^{3}\,\text{kg m}^{-3}

, determine the Young’s modulus of the steel. a)

1.3\times10^{11}\,\text{Pa}

3.9\times10^{11}\,\text{Pa}

1.95\times10^{11}\,\text{Pa}

7.8\times10^{7}\,\text{Pa}