\input exam_mac

\startpaper{\begin{tabular}{l}DPHD 2773\\ DPHE 2773\\ DPHH 2773\end{tabular}}

\PartBthree
{B3:  ~ ASTROPHYSICS \& ATMOSPHERIC PHYSICS}
{Saturday, xx June 2007}{9.30 am}{12.30 pm}

\Section {A \rm (Astrophysics)}

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\Section {B \rm (Atmospheric Physics)}

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{\narrower
\noindent
The Navier-Stokes equation for a viscous incompressible fluid is
\[
\frac{\pa \vu}{\pa t} + (\vu\cdot\nabla)\vu + \frac{1}{\rho}\nabla p
= \nu\nabla^2\vu ,
\]
where $\vu$ is the fluid velocity, $\rho$ the density, $p$
the pressure and $\nu$ the kinematic viscosity.
\par}

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