Questions from College Physics

Q: Which of the following are possible reactions? (a)

Which of the following are possible reactions? (a) 01n + 23592U ( 14054Xe + 9438Sr + 2(01n) (b) 01n + 23592U ( 13250Sn + 10142Mo + 3(01n) (c) 01n + 23994Pu ( 12753I + 9341Nb + 3(01n)

Q: If the Q value of an endothermic reaction is -2.

If the Q value of an endothermic reaction is -2.17 MeV, the minimum kinetic energy needed in the reactant nuclei for the reaction to occur must be (a) Equal to 2.17 MeV, (b) Greater than 2.17 MeV, (c)...

Q: Which of the following reactions cannot occur? (a)

Which of the following reactions cannot occur? (a) p + p ( p + p + p- (b) n ( p + e- + v-e (c) μ+ ( e+ + ve + v-μ (d) π- ( μ- + v-μ

Q: Which of the following reactions cannot occur? (a)

Which of the following reactions cannot occur? (a) p + p- ( 2( (b) ( + p ( n + π0 (c) π0 + n ( K+ + ∑- (d) π+ + p ( K+ + ∑+

Q: Why is a neutron stable inside the nucleus? (In free

Why is a neutron stable inside the nucleus? (In free space, the neutron decays in 900 s.)

Q: True or False: A radioactive atom always decays after two half

True or False: A radioactive atom always decays after two half - lives have elapsed.

Q: What fraction of a radioactive sample has decayed after three half -

What fraction of a radioactive sample has decayed after three half - lives have elapsed? (a) 1/8 (b) 3/4 (c) 7/8 (d) None of these

Q: The peak of the stability curve occurs at 56Fe, which is

The peak of the stability curve occurs at 56Fe, which is why iron is prominent in the spectrum of the Sun and stars. Show that 56Fe has a higher binding energy per nucleon than its neighbors 55Mn and...

Q: Two nuclei having the same mass number are known as isobars.

Two nuclei having the same mass number are known as isobars. (a) Calculate the difference in binding energy per nucleon for the isobars 1123Na and 1223Mg. (b) How do you account for this difference? (...

Q: Calculate the binding energy of the last neutron in the 2043Ca nucleus

Calculate the binding energy of the last neutron in the 2043Ca nucleus. Hint: You should compare the mass of 2043Ca with the mass of 2042Ca plus the mass of a neutron. The mass of 2042Ca = 41.958622 u...