Sunday, January 23, 2005

Physics Final

A thermodynamics professor wrote a take home exam for his graduate students. It had one question: Is Hell exothermic (gives off heat) or endothermic (absorbs heat)? Support your answer with a proof.

Most of the students wrote their proofs using Boyle's Law -- gas cools off when it expands and heats up when it is compressed -- or some variant thereof. One student, however, wrote:

First, we need to know how the mass of Hell is changing in time. Therefore, we need to know the rate that souls are moving into Hell and rate they are leaving. I think we can safely assume that once a soul goes to Hell, it will not leave. Therefore, no souls are leaving. As for how many souls are entering Hell, well, let's look at the different religions that exist in the world today. Some of these religions state that if you are not a member of their religion you will go to Hell. Since there are more than one of these religions, and since people do not belong to more than one religion, we can predict that all people and all souls will go to Hell. With birth and death rates as they are, we can expect the number of souls in Hell to increase exponentially. Now we look at the rate of change of the volume in Hell because Boyle's Law states that in order for the temperature and pressure in Hell to stay the same, the volume of Hell has to expand as souls are added. Thus, we are left with two possibilities:

1) If Hell is expanding at a slower rate than the rate at which souls enter Hell, then the temperature and pressure in Hell will increase until all Hell breaks loose.

2)Of course, if Hell is expanding at a faster rate than the increase of souls in Hell, then the temperature and pressure will drop until Hell freezes over.

So which is it? If we accept the postulate given me by Ms. Therese Banyan during my freshman year, i.e., "It will be a cold day in Hell before I sleep with you" and take into account the fact that I still have not succeeded in having sexual relations with her, then #2 cannot be true, and so Hell is exothermic.

The student received the only A.

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