A point charge $Q=3.0\mu \text{C}$ is isolated in space. Taking $V\left(\infty \right)=0$, calculate the potential difference $V\left(\infty \right)-V\left(0.60\text{ m}\right)$. Use $k=9.0\times {10}^9\text{ N}\cdot {\text{m}}^2/{\text{C}}^2$.