At 10: 30 am, detectives discover a dead body in a room and measure its temperature at 27°c. one hour later, the body's temperature had dropped to 24.8°c. determine the time of death (when the body temperature was a normal 37°c), assuming that the temperature in the room was held constant at 22°c. (round your answer to two decimal places.)

: the time of death was hours before 10: 30 am.

The time of death was approximately 4 hours before 10:30 AM.

Explanation:

Temperature of the body when discovered by detective at 10:30 AM= 27°C

After discovery, Temperature of the body at 11.30 AM= 24.8°C

Change in time = ΔT = 1 hour

Rate of change of body temperature with respect to time :

Normal body temperature = 37°C

Change in time since death = ΔT'

The time of death was approximately 4 hours before 10:30 AM.

harry byrd declared organized resistance by southern states would prevent racial integration.

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.