\begin{problem*}{1.15}
A solid piece of led has a mass of $23.94\U{g}$ and a volume of
$2.10\U{cm$^3$}$.  From these data, calculate the density of lead in
SI units (kilograms per cubic meter).
\end{problem*} % Probem 1.15

\begin{solution}
\begin{equation}
  \rho = \frac{m}{V}
    = \frac{23.94\U{g}}{2.10\U{cm$^3$}}
      \cdot\frac{1\U{kg}}{10^3\U{g}}
      \cdot\p({\frac{10^2\U{cm}}{1\U{m}}})^3
    = \ans{11,400\U{kg/m$^3$}}
\end{equation}
\end{solution}
