Question 1

The strangeness of an anti-proton is:

Accepted Answer

A)  +1. 
B)  0. 
C)  -1. 
D)  -2. 
A)  +1. 
B)  0. 
C)  -1. 
D)  -2.

Question 2

The water surrounding the fuel rods in a nuclear fission reactor serves what purpose(s)?

Accepted Answer

A)  coolant 
B)  moderator 
C)  Both choices above are valid. 
D)  None of the choices above are valid. 
A)  coolant 
B)  moderator 
C)  Both choices above are valid. 
D)  None of the choices above are valid.

Question 3

The formation of a star requires the consideration of the effects of gravity and the energy from nuclear reactions and a star will form only when both the temperature and density are sufficiently high.In the birth of a star:

Accepted Answer

A)  gravity produces the initial required high temperature and density. 
B)  nuclear reactions produce the initial high temperature. 
C)  nuclear reactions produce the initial required high density. 
D)  nuclear reactions produce the initial required high temperature and density. 
A)  gravity produces the initial required high temperature and density. 
B)  nuclear reactions produce the initial high temperature. 
C)  nuclear reactions produce the initial required high density. 
D)  nuclear reactions produce the initial required high temperature and density.

Question 4

A plasma can be contained in a "magnetic bottle" because it has which of the following properties?

Accepted Answer

A)  high temperature 
B)  liquid in form 
C)  made of charged particles 
D)  made of light elements 
A)  high temperature 
B)  liquid in form 
C)  made of charged particles 
D)  made of light elements

Question 5

Which of these particles has the most mass?

Accepted Answer

A)  pion 
B)  muon 
C)  electron 
D)  positron 
A)  pion 
B)  muon 
C)  electron 
D)  positron

Question 6

Which particle in the free state is least stable?

Accepted Answer

A)  electron 
B)  photon 
C)  neutron 
D)  proton 
A)  electron 
B)  photon 
C)  neutron 
D)  proton

Question 7

In order to be useful in sustaining a reaction,the neutrons in a fission reactor must be:

Accepted Answer

A)  released from the reactor. 
B)  warmed to a higher temperature. 
C)  accelerated. 
D)  decelerated. 
A)  released from the reactor. 
B)  warmed to a higher temperature. 
C)  accelerated. 
D)  decelerated.

Question 8

"MeV/c2" is a unit for:

Accepted Answer

A)  energy. 
B)  mass. 
C)  momentum. 
D)  nuclear force. 
A)  energy. 
B)  mass. 
C)  momentum. 
D)  nuclear force.

Question 9

Which of the following will not influence the rate at which nuclear reactions will occur in a nuclear power plant where the fuel elements are a mixture of 235U and 238U?

Accepted Answer

A)  the presence of moderating material 
B)  the presence of control rods 
C)  the percentage of 235U relative to 238U 
D)  the percentage of the energy that is used to produce electricity 
A)  the presence of moderating material 
B)  the presence of control rods 
C)  the percentage of 235U relative to 238U 
D)  the percentage of the energy that is used to produce electricity

Question 10

In a fission reaction,a 235U nucleus captures a neutron.What energy is released if the products are 139I,95Y and two neutrons? (atomic masses: 235U,235.043 9;139I,138.935 0;95Y,94.913 4;neutron,1.008 67;and 1 u = 931.5 MeV/c2)

Accepted Answer

A)  123 MeV 
B)  174 MeV 
C)  199 MeV 
D)  218 MeV 
A)  123 MeV 
B)  174 MeV 
C)  199 MeV 
D)  218 MeV

Question 11

The virtual exchange of photons can produce:

Accepted Answer

A)  a repulsive force. 
B)  an attractive force. 
C)  either a repulsive or an attractive force. 
D)  neither a repulsive nor an attractive force. 
A)  a repulsive force. 
B)  an attractive force. 
C)  either a repulsive or an attractive force. 
D)  neither a repulsive nor an attractive force.

Question 12

Calculate the energy (in kW⋅h)given off if four kg of plutonium-239 undergoes complete fission.The energy released per fission is 200 MeV.(1 MeV = 1.6 × 10−13 J)

Accepted Answer

A)  8.96E+10 kW⋅h 
B)  5.12E+12 kW⋅h 
C)  2.02E+16 kW⋅h 
D)  8.96E+7 kW⋅h 
E)  5.35E+9 ​kW⋅h 
A)  8.96E+10 kW⋅h 
B)  5.12E+12 kW⋅h 
C)  2.02E+16 kW⋅h 
D)  8.96E+7 kW⋅h 
E)  5.35E+9 ​kW⋅h

Question 13

What is meant by a particle being elementary?

Accepted Answer

A)  It is too small to see. 
B)  It is subatomic. 
C)  It is not composed of other particles. 
D)  It has no charge. 
A)  It is too small to see. 
B)  It is subatomic. 
C)  It is not composed of other particles. 
D)  It has no charge.

Question 14

The size and sign of the charge on an electron is the same as that for:

Accepted Answer

A)  a positron. 
B)  an antiproton. 
C)  an antineutron. 
D)  an antineutrino. 
A)  a positron. 
B)  an antiproton. 
C)  an antineutron. 
D)  an antineutrino.

Question 15

One in 5600 water molecules contains a deuterium atom.If all the deuterium could be extracted from 2 m3 of water and then reacted,how much energy could be obtained? (Each D-D fusion liberates 3.65 MeV of energy,  
,  
,one mole of water has a mass of 18 g,and  
)

Accepted Answer

A)  7.0E+12 J 
B)  2.2E+25 J 
C)  5.8E+11 J 
D)  3.5E+12 J 
E)  ​1.1E+15 J 
A)  7.0E+12 J 
B)  2.2E+25 J 
C)  5.8E+11 J 
D)  3.5E+12 J 
E)  ​1.1E+15 J

Question 16

Which,if any,is an elementary particle?

Accepted Answer

A)  the proton 
B)  the Ω- particle 
C)  the muon 
D)  All three are not elementary particles. 
A)  the proton 
B)  the Ω- particle 
C)  the muon 
D)  All three are not elementary particles.

Question 17

In a nuclear fission process involving the use of 239Pu fuel,if the approximate average binding energy per nucleon in the product fragments is 8.8 MeV while that of the fuel atom is 8.1 MeV,what approximate net energy is released per fission?

Accepted Answer

A)  170 MeV 
B)  270 MeV 
C)  190 MeV 
D)  90 MeV 
E)  ​50 MeV 
A)  170 MeV 
B)  270 MeV 
C)  190 MeV 
D)  90 MeV 
E)  ​50 MeV

Question 18

According to the standard model,there are some cases in which a quark and its anti-quark have the same:

Accepted Answer

A)  charge. 
B)  baryon number. 
C)  strangeness. 
D)  All of the above are always different. 
A)  charge. 
B)  baryon number. 
C)  strangeness. 
D)  All of the above are always different.

Question 19

In a nuclear reactor which uses the fission process,which of the following is the most likely result in the event of a cooling system failure followed by a nuclear accident?

Accepted Answer

A)  proliferation of plutonium fuel 
B)  accumulation of critical mass of fissionable material 
C)  spread of radioactive material into the environment 
D)  reduction of ozone in upper atmosphere 
A)  proliferation of plutonium fuel 
B)  accumulation of critical mass of fissionable material 
C)  spread of radioactive material into the environment 
D)  reduction of ozone in upper atmosphere

Question 20

Which of the following can only occur if the reproduction constant,K,exceeds 1?

Accepted Answer

A)  nuclear meltdown at a nuclear power plant 
B)  explosive release of radioactivity and steam from a nuclear power plant 
C)  the explosion of a nuclear bomb 
D)  All of the above require that K exceed 1. 
A)  nuclear meltdown at a nuclear power plant 
B)  explosive release of radioactivity and steam from a nuclear power plant 
C)  the explosion of a nuclear bomb 
D)  All of the above require that K exceed 1.

Exam 30: Nuclear Energy and Elementary Particles

The strangeness of an anti-proton is:

The water surrounding the fuel rods in a nuclear fission reactor serves what purpose(s)?

The formation of a star requires the consideration of the effects of gravity and the energy from nuclear reactions and a star will form only when both the temperature and density are sufficiently high.In the birth of a star:

A plasma can be contained in a "magnetic bottle" because it has which of the following properties?

Which of these particles has the most mass?

Which particle in the free state is least stable?

In order to be useful in sustaining a reaction,the neutrons in a fission reactor must be:

"MeV/c2" is a unit for:

Which of the following will not influence the rate at which nuclear reactions will occur in a nuclear power plant where the fuel elements are a mixture of 235U and 238U?

In a fission reaction,a 235U nucleus captures a neutron.What energy is released if the products are 139I,95Y and two neutrons? (atomic masses: 235U,235.043 9;139I,138.935 0;95Y,94.913 4;neutron,1.008 67;and 1 u = 931.5 MeV/c2)

The virtual exchange of photons can produce:

Calculate the energy (in kW⋅h)given off if four kg of plutonium-239 undergoes complete fission.The energy released per fission is 200 MeV.(1 MeV = 1.6 × 10−13 J)

What is meant by a particle being elementary?

The size and sign of the charge on an electron is the same as that for:

One in 5600 water molecules contains a deuterium atom.If all the deuterium could be extracted from 2 m3 of water and then reacted,how much energy could be obtained? (Each D-D fusion liberates 3.65 MeV of energy, , ,one mole of water has a mass of 18 g,and )

Which,if any,is an elementary particle?

In a nuclear fission process involving the use of 239Pu fuel,if the approximate average binding energy per nucleon in the product fragments is 8.8 MeV while that of the fuel atom is 8.1 MeV,what approximate net energy is released per fission?

According to the standard model,there are some cases in which a quark and its anti-quark have the same:

In a nuclear reactor which uses the fission process,which of the following is the most likely result in the event of a cooling system failure followed by a nuclear accident?

Which of the following can only occur if the reproduction constant,K,exceeds 1?

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles: Part A

"MeV/c²" is a unit for:

Which of the following will not influence the rate at which nuclear reactions will occur in a nuclear power plant where the fuel elements are a mixture of ²³⁵U and ²³⁸U?

In a fission reaction,a ²³⁵U nucleus captures a neutron.What energy is released if the products are ¹³⁹I,⁹⁵Y and two neutrons? (atomic masses: ²³⁵U,235.043 9;¹³⁹I,138.935 0;⁹⁵Y,94.913 4;neutron,1.008 67;and 1 u = 931.5 MeV/c²)

Calculate the energy (in kW⋅h)given off if four kg of plutonium-239 undergoes complete fission.The energy released per fission is 200 MeV.(1 MeV = 1.6 × 10−¹³ J)

One in 5600 water molecules contains a deuterium atom.If all the deuterium could be extracted from 2 m³ of water and then reacted,how much energy could be obtained? (Each D-D fusion liberates 3.65 MeV of energy, , ,one mole of water has a mass of 18 g,and )

In a nuclear fission process involving the use of ²³⁹Pu fuel,if the approximate average binding energy per nucleon in the product fragments is 8.8 MeV while that of the fuel atom is 8.1 MeV,what approximate net energy is released per fission?