A copper rod at 25°C is 2.5 m long. How long would it take a sound to move through the rod from one end to another? how would I do this?

Length of the copper rod = 2.5 meters

Speed at which sound travels through copper = 3560 meter per second

Let us assume the time taken

by sound to cover the given distance = x seconds

We already know that

Speed = Distance / Time

Then

Time = Distance / Speed

x = 2.5/3560 seconds

= 0.0007 seconds.

This can ve done by hitting one end of the rod and then receiving the sound at the other end and using the stop clock to measure the time taken.