barbar12345
09.03.2020 •
Mathematics
In a murder investigation, the temperature of the corpse was 32.5°C at 1:30 pm and 30.3°C an hour later. Normal body temperature is 37.0°C and the temperature of the surroundings was 20.0°C. When did the murder take place?
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Ответ:
Step-by-step explanation:
Given that in a murder investigation, the temperature of the corpse was 32.5°C at 1:30 pm and 30.3°C an hour later.
Normal body temperature is 37.0°C and the temperature of the surroundings was 20.0°C.
As per Newton law of cooling we have
is the temperature at time t.
Substitute this for given two information to find k and T0
Divide I equation by II to get
Using this we find t at 1.30 p.m.
i.e. approximately 1.6 hours or 1 hour 36 minutes lapsed at 1.30
Time of murder is
11 hrs 54 minutes.
Ответ:
A
Step-by-step explanation: because i took the test :D