Ice on the trayRunning
Particle chamber. Cubes added at 9 cubes. Cubes on the tray 13.2 cubes, Tray holds 10 cubes. Currently cubes on the tray is over by 3.2 cubes.TUNINGSEALED PARTICLE CHAMBER9 CUBES
t = 0.0s

Cubes on the tray

13.2cubes

Tray holds

10cubes

9 cubes

Particle chamber. Cubes added at 9 cubes. Cubes on the tray 13.2 cubes, Tray holds 10 cubes. Currently cubes on the tray is over by 3.2 cubes.

What has to balancen1+n2=ntotaln_1 + n_2 = n_{total}

What is happening

You arrive at a classroom melting experiment that needs a full tray to start.

The experiment cannot start with a part-full tray. Four cubes have already gone in, and the tray takes 10 before the lesson can begin.