Question 1

A __________ has integral spin.

Accepted Answer

The answer of A __________ has integral spin....

Question 2

What is the symbol for a neutrino?

Accepted Answer

A)  n
B)   
C)   
D)  none of the aboveE) B) and C)
F) A) and B)

Question 3

The color force between quarks is carried by __________.

Accepted Answer

The answer of The color force between quarks is carried...

Question 4

A __________ does not interact via the strong interaction.

Accepted Answer

The answer of A __________ does not interact via the...

Question 5

The prediction from special relativity that the length of a moving object will be shortened in the direction of motion is called __________.

Accepted Answer

The answer of The prediction from special relativity that the...

Question 6

A particle that interacts via the strong force is a(n)

Accepted Answer

A)  lepton.
B)  baryon.
C)  meson.
D)  intermediate (or gauge) boson.
E)  hadron.F) A) and D)
G) C) and D)

Question 7

When it comes near a heavy nucleus,a gamma ray,which is a high energy photon,can "disappear," and in its place there will be produced an electron and a positron,which both have mass.This pair production is an example of

Accepted Answer

A)  time dilation.
B)  length contraction.
C)  the equivalence of mass and energy.
D)  the principle of relativity.
E)  none of the above.F) All of the above
G) A) and C)

Question 8

If a twin goes on a trip in a high-speed rocket ship,when she returns home she will be younger than her twin sister who did not go on the trip because of

Accepted Answer

A)  time dilation.
B)  length contraction.
C)  the equivalence of mass and energy.
D)  the principle of relativity.
E)  none of the above.F) None of the above
G) B) and E)

Question 9

Strangeness is conserved observed in strong and electromagnetic interactions,but not in weak interactions.

Accepted Answer

A) True 
 B)False

Question 10

All neutrinos are left handed.

Accepted Answer

A) True 
 B)False

Question 11

​Match each item with the correct statement below.​
-subatomic particles which possess a quantum "charge" that is conserved in strong and electromagnetic interactions,but not in weak interactions

Accepted Answer

A)  ​time dilation
B)  ​elementary particle
C)  ​antiparticle
D)  ​spin
E)  ​fermionsF) ​bosonsG) ​baryonsH) ​leptonsI) ​strange particlesJ) ​quarksK) ​charmL) ​electroweak interactionM) ​GUTsN) ​intermediate bosonsO) ​mesonsP) C) and D)
Q) B) and J)

Question 12

What is the quark composition of the strange Κ+ meson?

Accepted Answer

Question 13

How many quark colors are there?

Accepted Answer

A)  1
B)  3
C)  6
D)  none of the aboveE) B) and D)
F) All of the above

Question 14

Short range interactions generally have carrier particles of greater mass than those for long range interactions.

Accepted Answer

A) True 
 B)False

Question 15

Baryon number is conserved in all interactions.

Accepted Answer

A) True 
 B)False

Question 16

If a twin goes on a trip in a high-speed rocket ship,when she returns home she will be younger than her twin sister who did not go on the trip because of the special relativistic effect of __________.

Accepted Answer

The answer of If a twin goes on a trip...

Question 17

An electron and a positron,which are two massive particles,can annihilate when they come together to produce two photons,which have no mass.This pair annihilation is an example of

Accepted Answer

A)  time dilation.
B)  length contraction.
C)  the equivalence of mass and energy.
D)  the principle of relativity.
E)  none of the above.F) B) and D)
G) D) and E)

Question 18

What is the mass of an electron in MeV/c2?

Accepted Answer

A)  0.511 MeV/c2
B)  105.7 MeV/c2
C)  1777 MeV/c2
D)  none of the aboveE) A) and B)
F) A) and C)

Question 19

The lifetime of a free neutron is 887 s.If a neutron moves with a speed 2.9 × 108 m/s relative to an observer in the lab,what does the observer measure the neutron's lifetime to be?

Accepted Answer

Question 20

Charm,beauty,and truth are three quantum numbers for quarks.

Accepted Answer

A) True 
 B)False

Exam 12: Special Relativity and Elementary Particles

If a twin goes on a trip in a high-speed rocket ship,when she returns home she will be younger than her twin sister who did not go on the trip because of the special relativistic effect of __________.

Correct AnswerverifiedShow Answer

What is the quark composition of the strange Κ+ meson?

Correct AnswerverifiedShow Answer

Short range interactions generally have carrier particles of greater mass than those for long range interactions.

Correct AnswerverifiedShow Answer

If a twin goes on a trip in a high-speed rocket ship,when she returns home she will be younger than her twin sister who did not go on the trip because of

Correct AnswerverifiedShow Answer

What is the mass of an electron in MeV/c2?

Correct AnswerverifiedShow Answer

An electron and a positron,which are two massive particles,can annihilate when they come together to produce two photons,which have no mass.This pair annihilation is an example of

Correct AnswerverifiedShow Answer

A __________ does not interact via the strong interaction.

Correct AnswerverifiedShow Answer

Charm,beauty,and truth are three quantum numbers for quarks.

Correct AnswerverifiedShow Answer

A __________ has integral spin.

Correct AnswerverifiedShow Answer

​Match each item with the correct statement below.​ -subatomic particles which possess a quantum "charge" that is conserved in strong and electromagnetic interactions,but not in weak interactions

Correct AnswerverifiedShow Answer

All neutrinos are left handed.

Correct AnswerverifiedShow Answer

Baryon number is conserved in all interactions.

Correct AnswerverifiedShow Answer

What is the symbol for a neutrino?

Correct AnswerverifiedShow Answer

The color force between quarks is carried by __________.

Correct AnswerverifiedShow Answer

Strangeness is conserved observed in strong and electromagnetic interactions,but not in weak interactions.

Correct AnswerverifiedShow Answer

The prediction from special relativity that the length of a moving object will be shortened in the direction of motion is called __________.

Correct AnswerverifiedShow Answer

The lifetime of a free neutron is 887 s.If a neutron moves with a speed 2.9 × 108 m/s relative to an observer in the lab,what does the observer measure the neutron's lifetime to be?

Correct AnswerverifiedShow Answer

A particle that interacts via the strong force is a(n)

Correct AnswerverifiedShow Answer

How many quark colors are there?

Correct AnswerverifiedShow Answer

When it comes near a heavy nucleus,a gamma ray,which is a high energy photon,can "disappear," and in its place there will be produced an electron and a positron,which both have mass.This pair production is an example of

Correct AnswerverifiedShow Answer

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What is the quark composition of the strange Κ⁺ meson?

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What is the mass of an electron in MeV/c²?

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Match each item with the correct statement below. -subatomic particles which possess a quantum "charge" that is conserved in strong and electromagnetic interactions,but not in weak interactions

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The lifetime of a free neutron is 887 s.If a neutron moves with a speed 2.9 × 10⁸ m/s relative to an observer in the lab,what does the observer measure the neutron's lifetime to be?

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