LN2 in a model cannon shoots a cork.

LN2 in a model cannon shoots a cork. With the valve open, liquid nitrogen is poured into the cannon barrel. The barrel is then plugged with a cork, and the valve is closed. In seconds, enough liquid nitrogen has evaporated to blow the cork out of the cannon. Valve TEMPERATURE AND EXPANSION.
UCB Index: 
C+70+32
Demo Diagram: 

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