A steel wire of length 31.0 m and a copper wire of length 17.0 m, both with 1.00-mm diameters, are connected end to end and stretched to a tension of 122 N. During what time interval will a transverse wave travel the entire length of the two wires

The time taken is  

Explanation:

From the question we are told that

  The length of steel the wire is  

   The  length of the  copper wire is  

    The  diameter of the wire is  

     The  tension is  

The time taken by the transverse wave to travel the length of the two wire is mathematically represented as

Where   is the time taken to transverse the steel wire which is mathematically represented as

here   is the density of steel with a value  

   So

 And

        is the time taken to transverse the copper wire which is mathematically represented as

here   is the density of steel with a value  

 So

So