Provide a diagram for an experiment to determine the volume and density of material in a ring.

Here is the solution for the experiment "Determining the Volume of Material in a Ring and Its Density", using assumed values as requested:

Diagram

\begin{tikzpicture}[scale=1.0] % Ring (Torus) \draw[thick] (0,0) ellipse (2cm and 0.8cm); % Outer ellipse \draw[thick] (0,0) ellipse (1cm and 0.4cm); % Inner ellipse \draw[thick] (2,0) arc (0:180:2cm and 0.8cm); % Top half of outer \draw[thick, dashed] (2,0)