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?

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.

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

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step-by-step explanation: