A wire stretched between two rigid supports vibrates in its fundamental mode with a frequency 45 Hz. The mass of the wire is 3.5 X ${{10}^{-2}}$ kg and its linear density is 4.0 X ${{10}^{-2}}$ kg ${{m}^{-1}}$. What is (a) the speed of a transverse wave on the string, and (b) the tension in the string
