Question 1

If two quarks in an anti-proton have the color anti-red and anti-blue,the third quark must have the color:

Accepted Answer

A)  red. 
B)  blue. 
C)  anti-purple. 
D)  anti-green. 
A)  red. 
B)  blue. 
C)  anti-purple. 
D)  anti-green.

Question 2

In the decay of the muon into an electron,a neutrino,and an antineutrino,the antineutrino is a(n)________ antineutrino.

Accepted Answer

A)  electron 
B)  muon 
C)  tau 
D)  gluon 
A)  electron 
B)  muon 
C)  tau 
D)  gluon

Question 3

Mesons are always composed of:

Accepted Answer

A)  two quarks,one being classified as a quark and the other as an antiquark. 
B)  a quark of one color and an antiquark of the anticolor. 
C)  an up or down quark and a down or up antiquark. 
D)  Two of the above choices are correct. 
A)  two quarks,one being classified as a quark and the other as an antiquark. 
B)  a quark of one color and an antiquark of the anticolor. 
C)  an up or down quark and a down or up antiquark. 
D)  Two of the above choices are correct.

Question 4

The Σ+,Σ0,and Σ- all have strangeness of (-1).The collision of an anti-proton and a neutron may produce which of the following particles?

Accepted Answer

A)  Σ- and Σ0 
B)  Σ+ and anti-Σ0 
C)  anti-Σ+ and Σ0 
D)  anti-Σ- and Σ0 
A)  Σ- and Σ0 
B)  Σ+ and anti-Σ0 
C)  anti-Σ+ and Σ0 
D)  anti-Σ- and Σ0

Question 5

According to the standard model,a quark and its antiquark may have the same:

Accepted Answer

A)  spin. 
B)  baryon number. 
C)  charge. 
D)  All of the above may be the same. 
A)  spin. 
B)  baryon number. 
C)  charge. 
D)  All of the above may be the same.

Question 6

The medical diagnostic technique PET stands for:

Accepted Answer

A)  proton energizing test. 
B)  phosphorus electron tracing. 
C)  precision electronic tracking. 
D)  positron emission tomography. 
A)  proton energizing test. 
B)  phosphorus electron tracing. 
C)  precision electronic tracking. 
D)  positron emission tomography.

Question 7

In a fission reaction,a 235U nucleus captures a neutron.This results in the creation of the products 141Ba and 92Kr along with how many neutrons?

Accepted Answer

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

Question 8

Which force can act over distances comparable to the distance between planets?

Accepted Answer

A)  only gravitational 
B)  only electrical 
C)  only magnetic 
D)  All of the above. 
A)  only gravitational 
B)  only electrical 
C)  only magnetic 
D)  All of the above.

Question 9

Experimentally,strange particles can be produced in abundance,but they decay relatively slowly.This occurs because strangeness:

Accepted Answer

A)  is conserved in both their production and decay. 
B)  is conserved in their production but not in their decay. 
C)  is conserved in their decay but not in their production. 
D)  is not conserved in either their production or their decay. 
A)  is conserved in both their production and decay. 
B)  is conserved in their production but not in their decay. 
C)  is conserved in their decay but not in their production. 
D)  is not conserved in either their production or their decay.

Question 10

A photon hits an electron,and an antiproton is created.Some uncharged particles must have left the collision.These may be:

Accepted Answer

A)  neutron and neutrino. 
B)  neutron and antineutrino. 
C)  photon and neutrino. 
D)  photon and antineutrino. 
A)  neutron and neutrino. 
B)  neutron and antineutrino. 
C)  photon and neutrino. 
D)  photon and antineutrino.

Question 11

The stars farther than 20 000 LY from the center of the Milky Way are traveling too fast to be bound to the galaxy by the observed mass of the galaxy.Which of the following are currently being investigated as possible explanations of this?

Accepted Answer

A)  neutrino mass 
B)  WIMPs 
C)  Newtonian dynamics are not quite correct. 
D)  all of the above 
A)  neutrino mass 
B)  WIMPs 
C)  Newtonian dynamics are not quite correct. 
D)  all of the above

Question 12

What is the "cosmological constant?"

Accepted Answer

A)  The universe has existed forever and on the average (over billions of cubic light years)does not change. 
B)  This is the ratio between "dark energy" and "dark matter." 
C)  This is a quantity also referred to as "quintessence." 
D)  This is a self-admitted blunder in his theory of general relativity by Einstein,that might not be a blunder after all.. 
A)  The universe has existed forever and on the average (over billions of cubic light years)does not change. 
B)  This is the ratio between "dark energy" and "dark matter." 
C)  This is a quantity also referred to as "quintessence." 
D)  This is a self-admitted blunder in his theory of general relativity by Einstein,that might not be a blunder after all..

Question 13

If protons have a half-life of 1031 years,what fraction of the original protons have decayed during the 103 year existence of the universe?

Accepted Answer

A)  3/31 
B)  28/31 
C)  4 × 10-7.00 
D)  4/10 
E)  l​ess than any of the above values 
A)  3/31 
B)  28/31 
C)  4 × 10-7.00 
D)  4/10 
E)  l​ess than any of the above values

Question 14

Which of the following forces is the weakest?

Accepted Answer

A)  strong nuclear 
B)  weak nuclear 
C)  electromagnetic 
D)  gravitational 
A)  strong nuclear 
B)  weak nuclear 
C)  electromagnetic 
D)  gravitational

Question 15

The average mass per nucleon is greatest in which of the following elements?

Accepted Answer

A)  hydrogen 
B)  iron 
C)  uranium 
D)  krypton 
A)  hydrogen 
B)  iron 
C)  uranium 
D)  krypton

Question 16

A capture by a target nucleus of uranium-235 is most apt to occur for which type of "bullet" particle?

Accepted Answer

A)  low velocity alpha particle 
B)  low velocity proton 
C)  high velocity neutron 
D)  low velocity neutron 
A)  low velocity alpha particle 
B)  low velocity proton 
C)  high velocity neutron 
D)  low velocity neutron

Question 17

Which of the following particles is (are)considered to be elementary?

Accepted Answer

A)  the neutron 
B)  the meson 
C)  the electron 
D)  All of the above. 
A)  the neutron 
B)  the meson 
C)  the electron 
D)  All of the above.

Question 18

The advantage of a fusion reactor when compared to a fission reactor is which of the following?

Accepted Answer

A)  The fuel is cheaper. 
B)  There is less radioactive waste material. 
C)  Both choices above are valid. 
D)  None of the above choices are valid. 
A)  The fuel is cheaper. 
B)  There is less radioactive waste material. 
C)  Both choices above are valid. 
D)  None of the above choices are valid.

Question 19

If the lifetime of a particle is roughly inversely proportional to the relative strength of the force involved,then for the strong,electromagnetic,and weak forces,arrange the forces according to their resulting lifetimes ranging from shortest to longest lifetimes.

Accepted Answer

A)  strong,electromagnetic,weak 
B)  weak,electromagnetic,strong 
C)  weak,strong,electromagnetic 
D)  strong,weak,electromagnetic 
A)  strong,electromagnetic,weak 
B)  weak,electromagnetic,strong 
C)  weak,strong,electromagnetic 
D)  strong,weak,electromagnetic

Question 20

The particle thought responsible for particle masses is:

Accepted Answer

A)  the graviton. 
B)  the gluon. 
C)  the Ω- particle. 
D)  the Higgs boson. 
A)  the graviton. 
B)  the gluon. 
C)  the Ω- particle. 
D)  the Higgs boson.

Exam 30: Nuclear Energy and Elementary Particles

If two quarks in an anti-proton have the color anti-red and anti-blue,the third quark must have the color:

In the decay of the muon into an electron,a neutrino,and an antineutrino,the antineutrino is a(n)________ antineutrino.

Mesons are always composed of:

The Σ+,Σ0,and Σ- all have strangeness of (-1).The collision of an anti-proton and a neutron may produce which of the following particles?

According to the standard model,a quark and its antiquark may have the same:

The medical diagnostic technique PET stands for:

In a fission reaction,a 235U nucleus captures a neutron.This results in the creation of the products 141Ba and 92Kr along with how many neutrons?

Which force can act over distances comparable to the distance between planets?

Experimentally,strange particles can be produced in abundance,but they decay relatively slowly.This occurs because strangeness:

A photon hits an electron,and an antiproton is created.Some uncharged particles must have left the collision.These may be:

The stars farther than 20 000 LY from the center of the Milky Way are traveling too fast to be bound to the galaxy by the observed mass of the galaxy.Which of the following are currently being investigated as possible explanations of this?

What is the "cosmological constant?"

If protons have a half-life of 1031 years,what fraction of the original protons have decayed during the 103 year existence of the universe?

Which of the following forces is the weakest?

The average mass per nucleon is greatest in which of the following elements?

A capture by a target nucleus of uranium-235 is most apt to occur for which type of "bullet" particle?

Which of the following particles is (are)considered to be elementary?

The advantage of a fusion reactor when compared to a fission reactor is which of the following?

If the lifetime of a particle is roughly inversely proportional to the relative strength of the force involved,then for the strong,electromagnetic,and weak forces,arrange the forces according to their resulting lifetimes ranging from shortest to longest lifetimes.

The particle thought responsible for particle masses is:

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

The Σ⁺,Σ⁰,and Σ^- all have strangeness of (-1).The collision of an anti-proton and a neutron may produce which of the following particles?

In a fission reaction,a ²³⁵U nucleus captures a neutron.This results in the creation of the products ¹⁴¹Ba and ⁹²Kr along with how many neutrons?

If protons have a half-life of 10³¹ years,what fraction of the original protons have decayed during the 10³ year existence of the universe?