A steel wire is fixed between two rigid supports $0.80\ \text{m}$ apart. It is stretched so that its strain is $1.6 \times 10^{-3}$. Steel has a Young's modulus of $2.0 \times 10^{11}\ \text{Pa}$ and a density of $8000\ \text{kg/m}^3$. What is the fundamental frequency of the wire? Give the answer in $\text{Hz}$.