Example: Charles' Law



When the aluminum can attached to the Pasco gas law apparatus is heated, the floating piston rises, and the cylinder volume increases. The animation shows the cylinder with attached pressure sensor (reading in kPa) and thermometer (reading in °C), and is accompanied by a graph of cylinder volume vs. absolute temperature.

Recall that the total system volume, V, is the sum of the cylinder volume plus the volume of the external hoses and can.  By running the simulation, and pausing it at suitable intervals, determine several cylinder-volume and temperature points.  perform a least-squares fit to determine Vo, the volume of the (unseen) aluminum can and air hoses.

Vo= X [370]cm3
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