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In a nuclear reaction, a Carbon-14 nucleus initially at rest emits a beta particle (an electron)...

In a nuclear reaction, a Carbon-14 nucleus initially at rest emits a beta particle (an electron) with 156 keV of kinetic energy. The mass of a Carbon-14 nucleus is 14.000 u.

a. What is the speed of the beta particle? (in term of c)

b. What is the momentum of the beta particle?

c. What is the speed of the recoil nucleus after it emits the beta particle?

d. Choose the best option regarding the momentum of the recoil nucleus after it emits the beta particle:

- The momentum of the recoil nucleus is equal and opposite to that of the beta particle

- The momentum of the recoil nucleus is equal to that of the beta particle

- The momentum of the recoil nucleus is less than that of the beta particle

- The momentum of the recoil nucleus is less than that of the beta particle

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