Consider the Candle in a Jar Experiment. -place a candlestick in a bowl of water

Question

Consider the Candle in a Jar Experiment.

-place a candlestick in a bowl of water

-light the candlestick, place a jar over the candlestick and into the bowl

-candlestick flame goes out. Water level in the jar begins to rise until it reaches a steady state.

Develop an equation to predict the FINAL HEIGHT OF WATER IN THE JAR expressed as a FRACTION OF THE JAR HEIGHT above the surrounding water. Use (and state) any assumptions necessary (including atmospheric pressure and temperature, volume of jar, size/amount of water in bowl, etc).

Thanks!

Explanation / Answer

the candle heats the air and expands it. This cancels the depletion of the oxygen temporarily and the water level stays down. When the oxygen is depleted, the candle goes out and the air cools.The volume of the air decreases and the water rises.After some time, the candle dims and goes out. Just before the candle dies, the water level rises to almost 1/10 th of pitcher height.

so water hieght= (1/10) hieght of jar

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