2025
= 2025
{scope}
{title2=A15271H1}
Source PDF: https://mmathphys.physics.ox.ac.uk/sites/g/files/vzsiac2991/files/mmathphys/documents/media/a15271h1.pdf
Solutions to both questions and all nine parts. The two-sphere calculation uses the leading free-draining approximation, with negligible connector drag; the limitations of that approximation are made explicit.