Modern Physics PHY 36001

Question 1.

Since the mass of the proton is 2000 times greater than the mass of the electron, the nuclei of all atoms must represent more than 99.9% of the total mass of the atom.

       True
       False

Question 2.

We can see from the electromagnetic charge distribution, that the protons and neutrons within the nucleus are closely packed with a uniform and well-defined surface.

       True
       False

Question 3.

Mass of a stable nucleus is always less than Z m_p + N m_n .

       True
       False

Question 4.

The nuclear strong force is long-ranged like all fundamental forces.

       True
       False

Question 5.

The strong-force interactions between protons and neutrons are similar.

       True
       False

Question 1.

In the usual nuclear notation ^A_ZX_N,

      a. Z is number of protons, N is number of neutrons and N + Z = A.
      b. A is number of protons, N is number of neutrons and N + Z = A.
      c. A is number of protons, N is number of neutrons and N + Z > A.
      d. A is number of protons, N is number of neutrons and N + Z < A.

Question 2.

The fundamental forces result from

      a. a nuclear wave function obtained from the Shroedinger equation.
      b. the exchange of smaller particles which seem to violate energy conservation for a short time.
      c. two people in sweaters playing with a spring.
      d. the derivative of an SU(2) transformation, and its associated tangent bundle.