3. A 45,000 kg rocket is at rest lying on the ground pointing westward. The rocket engines are touching a 2,300 kg mobile cart that is also at rest pointing in the other direction. When the rocket engines fire an impulse is
produced from 840,000 N of force for a period of 1.3 seconds.
a. Solve for the impulse (J = Fxt). This is also the change in momentum.
b. What is the final speed of the rocket? [ Ap = m(vp-v) ]
C. What is the final speed of the cart? (both the rocket and the cart have the same change in momentum)

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.

if they have a finite resultant

cancer risk hope this

pecialized keyboards