Question 1

The control rods in a nuclear reactor are used to

Accepted Answer

A)  produce neutrons. 
B)  add fuel to the reactor. 
C)  fragment elements by fission. 
D)  absorb $\gamma$ rays. 
E)  absorb neutrons. 
A)  produce neutrons. 
B)  add fuel to the reactor. 
C)  fragment elements by fission. 
D)  absorb $\gamma$ rays. 
E)  absorb neutrons.

Question 2

Estimate the mass density of the nucleus of an atom.

Accepted Answer

A)  103 kg/m3 
B)  106 kg/m3 
C)  109 kg/m3 
D)  1014 kg/m3 
E)  1017 kg/m3 
A)  103 kg/m3 
B)  106 kg/m3 
C)  109 kg/m3 
D)  1014 kg/m3 
E)  1017 kg/m3

Question 3

decays into   by proton emission. The Q of the reaction is 2.26 MeV. The mass of   is

Accepted Answer

A)  152.91728 u 
B)  152.92998 u 
C)  152.91970 u 
D)  152.92115 u 
E)  152.98320 u 
A)  152.91728 u 
B)  152.92998 u 
C)  152.91970 u 
D)  152.92115 u 
E)  152.98320 u

Question 4

How many times larger is the volume of the nucleus 208Pb (Z=82) compared to the nucleus 40Ca (Z=20)?

Accepted Answer

A)  0.58 
B)  1.7 
C)  5.2 
D)  4.1 
E)  2.3 
A)  0.58 
B)  1.7 
C)  5.2 
D)  4.1 
E)  2.3

Question 5

The emission of one beta particle (an electron) from the nucleus of an atom produces a change of

Accepted Answer

A)  -1 in the atomic number. 
B)  +1 in the atomic number. 
C)  +2 in the atomic number. 
D)  +2 in the atomic weight. 
E)  -2 in the atomic weight. 
A)  -1 in the atomic number. 
B)  +1 in the atomic number. 
C)  +2 in the atomic number. 
D)  +2 in the atomic weight. 
E)  -2 in the atomic weight.

Question 6

Calculate the Q-value for the following reaction,   . Use the following atomic masses.
 
14)003 24

Accepted Answer

A)  6.4 MeV 
B)  12.4 MeV 
C)  24.6 MeV 
D)  31.9 MeV 
E)  41.2 MeV 
A)  6.4 MeV 
B)  12.4 MeV 
C)  24.6 MeV 
D)  31.9 MeV 
E)  41.2 MeV

Question 7

The volume of a nucleus is directly proportional to the number of _______ it contains.

Accepted Answer

A)  electrons 
B)  protons 
C)  neutrons 
D)  isotopes 
E)  nucleons 
A)  electrons 
B)  protons 
C)  neutrons 
D)  isotopes 
E)  nucleons

Question 8

Many famous artifacts have been dated using 14C dating techniques. One of these were the Dead Sea Scrolls or manuscripts. An activity level of 0.20 Bq per gram of carbon was measured. If the half-life of 14C is 5730 years and there are about 15 decays per minute per gram of carbon in a living organism, then calculate the age of the famous manuscripts.

Accepted Answer

A)  2.7 * 103 years 
B)  1.9 * 103 years 
C)  1.3 * 103 years 
D)  3.7 * 104 years 
E)  None of these is correct. 
A)  2.7 * 103 years 
B)  1.9 * 103 years 
C)  1.3 * 103 years 
D)  3.7 * 104 years 
E)  None of these is correct.

Question 9

The discovery of the neutron came as a result of the reaction   For this reaction,

Accepted Answer

A) Q > 0 and the reaction is exothermic. B) Q > 0 and the reaction is endothermic. C) Q < 0 and the reaction is endothermic. D) Q < 0 and the reaction is exothermic. E) Q = 0 and the reaction is an elastic collision. A) Q > 0 and the reaction is exothermic. B) Q > 0 and the reaction is endothermic. C) Q < 0 and the reaction is endothermic. D) Q < 0 and the reaction is exothermic. E) Q = 0 and the reaction is an elastic collision.

Question 10

About 200 MeV of energy is released in the average fission reaction. Most of this energy is

Accepted Answer

A)  kinetic energy of fission neutrons. 
B)  kinetic energy of fission fragments. 
C)  energy of $\beta$- and $\gamma$rays. 
D)  energy of a particles and $\gamma$rays. 
E)  electromagnetic radiation in the visible portion of the spectrum. 
A)  kinetic energy of fission neutrons. 
B)  kinetic energy of fission fragments. 
C)  energy of $\beta$- and $\gamma$rays. 
D)  energy of a particles and $\gamma$rays. 
E)  electromagnetic radiation in the visible portion of the spectrum.

Question 11

The graph that best represents the cross section for a nuclear reaction involving protons versus the energy of an incident proton is

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 12

At a particular time, a radioactive source A has a strength of 1.60 * 1011 Bq and a half-life of 15.0 d, and a second source B has a strength of 8.50 * 1011 Bq. Sources A and B have the same strength 45.0 d later. The half-life of B is

Accepted Answer

A)  0.19 d 
B)  8.3 d 
C)  2.8 d 
D)  5.4 d 
E)  28 d 
A)  0.19 d 
B)  8.3 d 
C)  2.8 d 
D)  5.4 d 
E)  28 d

Question 13

The activity of a radioactive sample is defined as the number of decays per second. For a sample with N particles and a decay constant $\lambda$, the activity is

Accepted Answer

A)  proportional to $\lambda$ and inversely proportional to N. 
B)  proportional to $\lambda$ but independent of N. 
C)  directly proportional to both $\lambda$ and N. 
D)  independent of $\lambda$ but proportional to N. 
E)  inversely proportional to both$\lambda$and N. 
A)  proportional to $\lambda$ and inversely proportional to N. 
B)  proportional to $\lambda$ but independent of N. 
C)  directly proportional to both $\lambda$ and N. 
D)  independent of $\lambda$ but proportional to N. 
E)  inversely proportional to both$\lambda$and N.

Question 14

The total binding energy of   is approximately

Accepted Answer

A)  16.5 MeV 
B)  40.0 MeV 
C)  8.00 MeV 
D)  26.0 MeV 
E)  27.3 MeV 
A)  16.5 MeV 
B)  40.0 MeV 
C)  8.00 MeV 
D)  26.0 MeV 
E)  27.3 MeV

Question 15

The energy required to remove one neutron   from   is

Accepted Answer

A)  8.00 MeV 
B)  15.0 MeV 
C)  20.6 MeV 
D)  29.3 MeV 
E)  32.0 MeV 
A)  8.00 MeV 
B)  15.0 MeV 
C)  20.6 MeV 
D)  29.3 MeV 
E)  32.0 MeV

The control rods in a nuclear reactor are used to

Estimate the mass density of the nucleus of an atom.

decays into by proton emission. The Q of the reaction is 2.26 MeV. The mass of is

How many times larger is the volume of the nucleus 208Pb (Z=82) compared to the nucleus 40Ca (Z=20)?

The emission of one beta particle (an electron) from the nucleus of an atom produces a change of

Calculate the Q-value for the following reaction, . Use the following atomic masses. 14)003 24

The volume of a nucleus is directly proportional to the number of _______ it contains.

The discovery of the neutron came as a result of the reaction For this reaction,

About 200 MeV of energy is released in the average fission reaction. Most of this energy is

The graph that best represents the cross section for a nuclear reaction involving protons versus the energy of an incident proton is

At a particular time, a radioactive source A has a strength of 1.60 * 10¹¹ Bq and a half-life of 15.0 d, and a second source B has a strength of 8.50 * 10¹¹ Bq. Sources A and B have the same strength 45.0 d later. The half-life of B is

The activity of a radioactive sample is defined as the number of decays per second. For a sample with N particles and a decay constant $\lambda$ , the activity is

The total binding energy of is approximately

The energy required to remove one neutron from is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Elementary Particles and the Beginning of the Universe

Filters

Exam 20: Nuclear Physics

The control rods in a nuclear reactor are used to

Estimate the mass density of the nucleus of an atom.

decays into by proton emission. The Q of the reaction is 2.26 MeV. The mass of is

How many times larger is the volume of the nucleus 208Pb (Z=82) compared to the nucleus 40Ca (Z=20)?

The emission of one beta particle (an electron) from the nucleus of an atom produces a change of

Calculate the Q-value for the following reaction, . Use the following atomic masses. 14)003 24

The volume of a nucleus is directly proportional to the number of _______ it contains.

The discovery of the neutron came as a result of the reaction For this reaction,

About 200 MeV of energy is released in the average fission reaction. Most of this energy is

The graph that best represents the cross section for a nuclear reaction involving protons versus the energy of an incident proton is

At a particular time, a radioactive source A has a strength of 1.60 * 1011 Bq and a half-life of 15.0 d, and a second source B has a strength of 8.50 * 1011 Bq. Sources A and B have the same strength 45.0 d later. The half-life of B is

The activity of a radioactive sample is defined as the number of decays per second. For a sample with N particles and a decay constant λ\lambdaλ , the activity is

The total binding energy of is approximately

The energy required to remove one neutron from is

The Electric Field I: Discrete Charge Distributions

The Electric Field II: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Elementary Particles and the Beginning of the Universe

Filters

At a particular time, a radioactive source A has a strength of 1.60 * 10¹¹ Bq and a half-life of 15.0 d, and a second source B has a strength of 8.50 * 10¹¹ Bq. Sources A and B have the same strength 45.0 d later. The half-life of B is

The activity of a radioactive sample is defined as the number of decays per second. For a sample with N particles and a decay constant $\lambda$ , the activity is