Question 1

The neutron is made up of which one of the following quark combinations (up,down,strange,charm,top,bottom)?

Accepted Answer

A) uud 
B) ddu 
C) udd 
D) ttb 
E) bst 
A) uud 
B) ddu 
C) udd 
D) ttb 
E) bst C

Question 2

Inside the nucleus,the strongest of the four fundamental forces is

Accepted Answer

A) the weak nuclear force. 
B) the electromagnetic force. 
C) the gravitational force. 
D) the strong nuclear force. 
A) the weak nuclear force. 
B) the electromagnetic force. 
C) the gravitational force. 
D) the strong nuclear force. D

Question 3

What combination of quarks produces a proton and what are the electric charges on these quarks,expressed in terms of e?

Accepted Answer

uud,with charges +2/3 e,+2/3 e,and -1/3 e

Question 4

How many quarks are in a deuteron, ${}^{2}_{1}$ H?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 9 
A) 2 
B) 3 
C) 4 
D) 6 
E) 9

Question 5

What combination of quarks produces a neutron and what are the electric charges on these quarks,expressed in terms of e?

Accepted Answer

udd,with c

Question 6

Which of the following particles are leptons? (There may be more than one correct choice.)

Accepted Answer

A) protons 
B) neutrons 
C) electrons 
D) photons 
E) quarks 
A) protons 
B) neutrons 
C) electrons 
D) photons 
E) quarks

Question 7

Which of the following particles (or groups of particles)are made up of quarks?

Accepted Answer

A) protons, neutrons, and electrons 
B) electrons and neutrinos 
C) photons 
D) protons and neutrons 
E) All particles except for photons are made up of quarks. 
A) protons, neutrons, and electrons 
B) electrons and neutrinos 
C) photons 
D) protons and neutrons 
E) All particles except for photons are made up of quarks.

Question 8

A stable nucleus contains many protons very close to each other,all positively charged.Why do the protons not fly apart due to mutual Coulomb repulsion?

Accepted Answer

A) An attractive nuclear force in the nucleus counteracts the effect of the Coulomb forces. 
B) There are an equal number of electrons in the nucleus which neutralize the protons. 
C) The neutrons in the nucleus shield the protons from each other. 
D) The Coulomb force does not operate within nuclei. 
E) The gravity of the protons and neutrons overcomes their repulsion at such close distances. 
A) An attractive nuclear force in the nucleus counteracts the effect of the Coulomb forces. 
B) There are an equal number of electrons in the nucleus which neutralize the protons. 
C) The neutrons in the nucleus shield the protons from each other. 
D) The Coulomb force does not operate within nuclei. 
E) The gravity of the protons and neutrons overcomes their repulsion at such close distances.

Question 9

The two strongest forces that protons in a nucleus exert on each other are

Accepted Answer

A) the weak nuclear and electromagnetic forces. 
B) the weak nuclear and the gravitational forces. 
C) the electrostatic and the gravitational forces. 
D) the strong nuclear and the electrostatic forces. 
A) the weak nuclear and electromagnetic forces. 
B) the weak nuclear and the gravitational forces. 
C) the electrostatic and the gravitational forces. 
D) the strong nuclear and the electrostatic forces.

Question 10

Which of the following statements about hadrons are correct? (There may be more than one correct choice.)

Accepted Answer

A) Hadrons are composed of leptons. 
B) All hadrons are composed of quarks. 
C) All hadrons interact by the strong nuclear force. 
D) Electrons, protons, and neutrons are commonly-occurring hadrons. 
E) Protons and neutrons are hadrons, but the electron is not. 
A) Hadrons are composed of leptons. 
B) All hadrons are composed of quarks. 
C) All hadrons interact by the strong nuclear force. 
D) Electrons, protons, and neutrons are commonly-occurring hadrons. 
E) Protons and neutrons are hadrons, but the electron is not.

Question 11

Which of the following particles are not made up of quarks? (There could be more than one correct choice.)

Accepted Answer

A) alpha particle 
B) electron 
C) proton 
D) positron 
E) neutron 
A) alpha particle 
B) electron 
C) proton 
D) positron 
E) neutron

Question 12

Elementary particles that experience the weak nuclear force but not the strong nuclear force are called

Accepted Answer

A) leptons. 
B) hadrons. 
C) mesons. 
D) bosons. 
E) baryons. 
A) leptons. 
B) hadrons. 
C) mesons. 
D) bosons. 
E) baryons.

Question 13

What are the possible charges of a quark (not an antiquark)?

Accepted Answer

A) -e, 0, e 
B) -2/3 e, -1/3 e, +1/3 e, +2/3 e 
C) -2/3 e, +1/3 e 
D) -1/3 e, +2/3 e 
E) -1/3 e, +1/3 e 
A) -e, 0, e 
B) -2/3 e, -1/3 e, +1/3 e, +2/3 e 
C) -2/3 e, +1/3 e 
D) -1/3 e, +2/3 e 
E) -1/3 e, +1/3 e

Question 14

An electron and a positron,both essentially at rest,annihilate each other,emitting two identical photons in the process.What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10-31 kg.(h = 6.626 × 10-34 J ∙ s,c = 3.00 × 108 m/s)

Accepted Answer

A) 1.21 × 10-12 pm 
B) 1.73 pm 
C) 2.42 pm 
D) 3.07 pm 
E) 3.46 pm 
A) 1.21 × 10-12 pm 
B) 1.73 pm 
C) 2.42 pm 
D) 3.07 pm 
E) 3.46 pm

Question 15

How does the range of an exchange force depend on the mass of the exchange particle?

Accepted Answer

A) The range is longer for a massive exchange particle than for a light exchange particle. 
B) The range is shorter for a massive exchange particle than for a light exchange particle. 
C) The range does not depend on the mass of the exchange particle. 
A) The range is longer for a massive exchange particle than for a light exchange particle. 
B) The range is shorter for a massive exchange particle than for a light exchange particle. 
C) The range does not depend on the mass of the exchange particle.

Question 16

The proton is made up of which one of the following quark combinations (up,down,strange,charm,top,bottom)?

Accepted Answer

A) uud 
B) ddu 
C) udd 
D) ttb 
E) bst 
A) uud 
B) ddu 
C) udd 
D) ttb 
E) bst

Question 17

How many quarks are in a tritium isotope, ${}^{3}_{1}$ H?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 9 
A) 2 
B) 3 
C) 4 
D) 6 
E) 9

Question 18

Which of the following statements is not true of the strong nuclear force?

Accepted Answer

A) The nuclear force has a short range, of the order of nuclear dimensions. 
B) For two protons that are very close together, the nuclear force and the electric force have about the same magnitudes. 
C) The nuclear force does not depend on charge. 
D) A nucleon in a large nucleus interacts via the nuclear force only with nearby nucleons, not with ones far away in the nucleus. 
E) The nuclear force affects both neutrons and protons. 
A) The nuclear force has a short range, of the order of nuclear dimensions. 
B) For two protons that are very close together, the nuclear force and the electric force have about the same magnitudes. 
C) The nuclear force does not depend on charge. 
D) A nucleon in a large nucleus interacts via the nuclear force only with nearby nucleons, not with ones far away in the nucleus. 
E) The nuclear force affects both neutrons and protons.

Question 19

Inside the nucleus,the weakest of the four fundamental forces is

Accepted Answer

A) the weak nuclear force. 
B) the electromagnetic force. 
C) the gravitational force. 
D) the strong nuclear force. 
A) the weak nuclear force. 
B) the electromagnetic force. 
C) the gravitational force. 
D) the strong nuclear force.

Question 20

The main reason that there is a limit to the size of a stable nucleus is

Accepted Answer

A) the limited range of the gravitational force. 
B) the short range nature of the strong nuclear force. 
C) the weakness of the gravitational force. 
D) the weakness of the electrostatic force. 
A) the limited range of the gravitational force. 
B) the short range nature of the strong nuclear force. 
C) the weakness of the gravitational force. 
D) the weakness of the electrostatic force.

Exam 30: Particle Physics

The neutron is made up of which one of the following quark combinations (up,down,strange,charm,top,bottom)?

Inside the nucleus,the strongest of the four fundamental forces is

What combination of quarks produces a proton and what are the electric charges on these quarks,expressed in terms of e?

How many quarks are in a deuteron, 12{}^{2}_{1}12​ H?

What combination of quarks produces a neutron and what are the electric charges on these quarks,expressed in terms of e?

Which of the following particles are leptons? (There may be more than one correct choice.)

Which of the following particles (or groups of particles)are made up of quarks?

A stable nucleus contains many protons very close to each other,all positively charged.Why do the protons not fly apart due to mutual Coulomb repulsion?

The two strongest forces that protons in a nucleus exert on each other are

Which of the following statements about hadrons are correct? (There may be more than one correct choice.)

Which of the following particles are not made up of quarks? (There could be more than one correct choice.)

Elementary particles that experience the weak nuclear force but not the strong nuclear force are called

What are the possible charges of a quark (not an antiquark)?

An electron and a positron,both essentially at rest,annihilate each other,emitting two identical photons in the process.What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10-31 kg.(h = 6.626 × 10-34 J ∙ s,c = 3.00 × 108 m/s)

How does the range of an exchange force depend on the mass of the exchange particle?

The proton is made up of which one of the following quark combinations (up,down,strange,charm,top,bottom)?

How many quarks are in a tritium isotope, 13{}^{3}_{1}13​ H?

Which of the following statements is not true of the strong nuclear force?

Inside the nucleus,the weakest of the four fundamental forces is

The main reason that there is a limit to the size of a stable nucleus is

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Circular Motion

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Rotational Motion

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Dc Circuits

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Filters

How many quarks are in a deuteron, ${}^{2}_{1}$ H?

An electron and a positron,both essentially at rest,annihilate each other,emitting two identical photons in the process.What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10^-31 kg.(h = 6.626 × 10^-34 J ∙ s,c = 3.00 × 10⁸ m/s)

How many quarks are in a tritium isotope, ${}^{3}_{1}$ H?