Physics

Problem

Which of the following expresses the speed

v

of longitudinal sound waves in a slender metal rod of density

\rho

and Young’s modulus

Y

? a)

v = 2\sqrt{\dfrac{Y}{\rho}}

v = \sqrt{\dfrac{Y}{\rho}}

v = \sqrt{\dfrac{Y}{2\rho}}

v = \sqrt{\dfrac{2Y}{\rho}}