martes, 27 de febrero de 2007

Week 7: "Newton's Law of Cooling"


1. What is the Newton’s Law of Cooling?
The Newton’s law of cooling is when in an experiment the surface temperature of an object changes at a rate of its relative temperature. It is known like the difference between its temperature and the temperature of the surrounding environment.

2. What variables in your problem correspond with the variables in the Newton’s Law of Cooling?
*The environment temperature
*The Corpse temperature

3. According to this Law, at what time approximately the death happened?
*According with our investigations and the answer of the problem, the death happened some minutes before the body was founded.

4. How does the room temperature affect the time of death?
The room temperature affects the time because it changes the body’s temperature. Another important point is that the environment temperature will be never hotter than body and after hours (day) the body temperature will be colder than initial.

5. How does an illness (e.g. fever) affect the time of death?
If affect because the temperature of your body change when you are sick. So if the person was sick, he didn’t have a normal temperature.

6. How exact is the approximation of the Newton’s Law of Cooling for predicting the time of death?
I think that this method is very exact because when we resolve the previous exercises the time of the death that we got was almost the same of correct answer. It has a big percentage of the exact time. .

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