At crime scenes, the time of death is often determined by the temperature of the liver. Let (t) be the temperature the body, and be the surrounding temperature. Newton's heating-cooling law states that the rate of change in the temperature, H, is proportional to the difference between the object and the surrounding temperature. If it is 75 degrees outside and a living person is 98.6 degrees, use Newton's cooling law to determine how long a body that has temperature 76 degrees has been left outside if at time t = 12 hours, H(12) = 80. Note that we need two measurements as different masses will cool at different rates. O 23.42 O 24.35 O 25.694 O 31.385
At crime scenes, the time of death is often determined by the temperature of the liver. Let (t) be the temperature the body, and be the surrounding temperature. Newton's heating-cooling law states that the rate of change in the temperature, H, is proportional to the difference between the object and the surrounding temperature. If it is 75 degrees outside and a living person is 98.6 degrees, use Newton's cooling law to determine how long a body that has temperature 76 degrees has been left outside if at time t = 12 hours, H(12) = 80. Note that we need two measurements as different masses will cool at different rates. O 23.42 O 24.35 O 25.694 O 31.385
College Physics
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Transcribed Image Text:**Determining Time of Death Using Newton's Law of Cooling**
At crime scenes, the time of death is often determined by the temperature of the liver. Let \( H(t) \) be the temperature of the body, and \( S \) be the surrounding temperature.
**Newton's Heating-Cooling Law** states that the rate of change in the temperature, \( H \), is proportional to the difference between the object and the surrounding temperature.
Given:
- Outside temperature (\( S \)) is 75 degrees Fahrenheit
- Normal body temperature is 98.6 degrees Fahrenheit
- The body's temperature at \( t = 12 \) hours is \( H(12) = 80 \) degrees Fahrenheit
- Initial body temperature at time \( t = 0 \) is \( H(0) = 76 \) degrees Fahrenheit
Using Newton's cooling law to determine how long a body that has a temperature of 76 degrees Fahrenheit has been left outside:
Note that we need two measurements as different masses will cool at different rates.
**Multiple Choice Options:**
- 23.42
- 24.35
- 25.694
- 31.385
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