A copper wire is held at the two ends by rigid supports. At `30^(@)C` the wire is just tant, with negligible tension. Find the speed of transverse waves in this wire at `10^(@)C` if `Y=1.3xx10^(1!)N//m^(2), alpha=1.7xx10^(-5)l^(0)C and rho=9xx10^(3)kg//m^(3)`.

Explanation

`v=sqrt((Y alpha Delta theta)/(rho))`
`=sqrt((1.3xx10^(11)xx1.7xx10^(-5)xx(30-10))/(9xx10^(3)))=70m//s`