Which of the following would be best to do if you were inside a car and a power line fell on the car? a. wait for someone from the power company to come to . b. have someone reach in and pull you to safety. c. get out carefully without touching the metal of the car or the power line. d. pull the power line off the car yourself.

I think its either A or B but the best answer I think is APlz correct me if I'm wrong.

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.

a person with a mass of 106kg has a weight of 1060n