Question 1

The electrical charge of the electron, muon, and tau is

Accepted Answer

A)  $- 1.6 \times 10 ^ { - 19 } \mathrm { C }$ 
B)  $3.2 \times 10 ^ { - 19 } \mathrm { C }$ 
C)  $1.6 \times 10 ^ { - 19 } \mathrm { C } \text {. }$ 
D)  $- 3.2 \times 10 ^ { - 19 } \mathrm { C }$ 
A)  $- 1.6 \times 10 ^ { - 19 } \mathrm { C }$ 
B)  $3.2 \times 10 ^ { - 19 } \mathrm { C }$ 
C)  $1.6 \times 10 ^ { - 19 } \mathrm { C } \text {. }$ 
D)  $- 3.2 \times 10 ^ { - 19 } \mathrm { C }$

Question 2

The heaviest lepton is the

Accepted Answer

A)  proton. 
B)  electron. 
C)  neutron. 
D)  tau. 
A)  proton. 
B)  electron. 
C)  neutron. 
D)  tau.

Question 3

Particles with integer values for spin are called

Accepted Answer

A)  bosons. 
B)  fermions. 
C)  mesons. 
D)  quarks. 
A)  bosons. 
B)  fermions. 
C)  mesons. 
D)  quarks.

Question 4

All of the following conservation laws are absolute except the conservation of

Accepted Answer

A)  angular momentum. 
B)  baryon number. 
C)  strangeness. 
D)  Hold it! There are no exceptions. 
A)  angular momentum. 
B)  baryon number. 
C)  strangeness. 
D)  Hold it! There are no exceptions.

Question 5

The inverse of the Hubble constant provides

Accepted Answer

A)  the age of the Sun. 
B)  the size of the Sun. 
C)  the age of the universe. 
D)  the size of the Milky Way. 
A)  the age of the Sun. 
B)  the size of the Sun. 
C)  the age of the universe. 
D)  the size of the Milky Way.

Question 6

Mesons are made from how many quarks?

Accepted Answer

A)  One 
B)  Four 
C)  Three 
D)  Two 
A)  One 
B)  Four 
C)  Three 
D)  Two

Question 7

A rough rule in elementary particle physics is that, in order of increasing rate of reaction, the relevant forces are

Accepted Answer

A)  weak, strong, electromagnetic. 
B)  strong, electromagnetic, weak. 
C)  electromagnetic, weak, strong. 
D)  Hold it! None of the previous responses is valid. 
A)  weak, strong, electromagnetic. 
B)  strong, electromagnetic, weak. 
C)  electromagnetic, weak, strong. 
D)  Hold it! None of the previous responses is valid.

Question 8

The leptons are the

Accepted Answer

A)  proton and neutron. 
B)  electron, muon, tau, and their associated neutrinos. 
C)  pion and kaon. 
D)  six quarks. 
A)  proton and neutron. 
B)  electron, muon, tau, and their associated neutrinos. 
C)  pion and kaon. 
D)  six quarks.

Question 9

The Tevatron at Fermilab can yield protons with a maximum energy of

Accepted Answer

A)  1 MeV. 
B)  1 GeV. 
C)  10 GeV. 
D)  1 TeV. 
A)  1 MeV. 
B)  1 GeV. 
C)  10 GeV. 
D)  1 TeV.

Question 10

The range R of a force field is related to the mass M of the mediating particle (field quantum) by the expression

Accepted Answer

A)  R $\infty$M. 
B)  R$\infty$ $\frac { 1 } { M }$ 
C)  R is independent of M. 
D)  Hold it! A field is smooth and continuous, not quantized. 
A)  R $\infty$M. 
B)  R$\infty$ $\frac { 1 } { M }$ 
C)  R is independent of M. 
D)  Hold it! A field is smooth and continuous, not quantized.

Question 11

Scientists have been successful in unifying each of the following pairs of concepts except

Accepted Answer

A)  electricity and magnetism. 
B)  space and time. 
C)  electromagnetic and weak forces. 
D)  Hold it! There are no exceptions. 
A)  electricity and magnetism. 
B)  space and time. 
C)  electromagnetic and weak forces. 
D)  Hold it! There are no exceptions.

Question 12

Who was responsible for providing the whimsical name quarks?

Accepted Answer

A)  Gell-Mann 
B)  Feynman 
C)  Wheeler 
D)  Bohr 
A)  Gell-Mann 
B)  Feynman 
C)  Wheeler 
D)  Bohr

Question 13

All of the following properties of an antiparticle and its corresponding particle have identical values except

Accepted Answer

A)  charge. 
B)  mass. 
C)  spin. 
D)  Hold it! There are no exceptions. 
A)  charge. 
B)  mass. 
C)  spin. 
D)  Hold it! There are no exceptions.

Question 14

For a bubble chamber to record the passage of a particle, all of the following are requirements except

Accepted Answer

A)  the particle must be charged. 
B)  the liquid in the chamber must be superheated. 
C)  the photographs must be taken before the bubbles disperse. 
D)  Hold it! There are no exceptions. 
A)  the particle must be charged. 
B)  the liquid in the chamber must be superheated. 
C)  the photographs must be taken before the bubbles disperse. 
D)  Hold it! There are no exceptions.

Question 15

The unique feature of quarks is that

Accepted Answer

A)  they contain fractional charge. 
B)  they have no mass. 
C)  they have no charge. 
D)  they act just like photons. 
A)  they contain fractional charge. 
B)  they have no mass. 
C)  they have no charge. 
D)  they act just like photons.

Question 16

The ? $W ^ { + } , W \text {, and } Z ^ { \circ }$ particles are similar to the photon; but the one difference is that they

Accepted Answer

A)  have mass. 
B)  have color. 
C)  have no charge. 
D)  have no mass. 
A)  have mass. 
B)  have color. 
C)  have no charge. 
D)  have no mass.

Question 17

This theory is an attempt to explain the variety of all the known particles:

Accepted Answer

A)  String theory 
B)  Band theory 
C)  Turbulence theory 
D)  Inflation theory 
A)  String theory 
B)  Band theory 
C)  Turbulence theory 
D)  Inflation theory

Question 18

All of the following characteristics are valid for the (hypothetical) color force except

Accepted Answer

A)  it is independent of distance between the relevant force-experiencing particles. 
B)  it is mediated by gluons. 
C)  it is the generalized basis for the strong force. 
D)  Hold it! There are no exceptions. 
A)  it is independent of distance between the relevant force-experiencing particles. 
B)  it is mediated by gluons. 
C)  it is the generalized basis for the strong force. 
D)  Hold it! There are no exceptions.

Question 19

That electricity and magnetism are the same is an example of

Accepted Answer

A)  pair creation. 
B)  Bhabba scattering. 
C)  gravitational collapse. 
D)  a unified field theory. 
A)  pair creation. 
B)  Bhabba scattering. 
C)  gravitational collapse. 
D)  a unified field theory.

Question 20

Of the following three categories of particles, the only group that contains particles with the exclusive value of 1/2 for spin is the

Accepted Answer

A)  baryons. 
B)  mesons. 
C)  leptons. 
D)  None of the previous responses is valid. 
A)  baryons. 
B)  mesons. 
C)  leptons. 
D)  None of the previous responses is valid.

Exam 41: Elementary Particles and Cosmology

The electrical charge of the electron, muon, and tau is

The heaviest lepton is the

Particles with integer values for spin are called

All of the following conservation laws are absolute except the conservation of

The inverse of the Hubble constant provides

Mesons are made from how many quarks?

A rough rule in elementary particle physics is that, in order of increasing rate of reaction, the relevant forces are

The leptons are the

The Tevatron at Fermilab can yield protons with a maximum energy of

The range R of a force field is related to the mass M of the mediating particle (field quantum) by the expression

Scientists have been successful in unifying each of the following pairs of concepts except

Who was responsible for providing the whimsical name quarks?

All of the following properties of an antiparticle and its corresponding particle have identical values except

For a bubble chamber to record the passage of a particle, all of the following are requirements except

The unique feature of quarks is that

The ? W+,W, and Z∘W ^ { + } , W \text {, and } Z ^ { \circ }W+,W, and Z∘ particles are similar to the photon; but the one difference is that they

This theory is an attempt to explain the variety of all the known particles:

All of the following characteristics are valid for the (hypothetical) color force except

That electricity and magnetism are the same is an example of

Of the following three categories of particles, the only group that contains particles with the exclusive value of 1/2 for spin is the

Space, Time, and Mass

Motion Along a Straight Line

Vectors

Motion in Two and Three Dimensions

Newtons Laws of Motion

Further Applications of Newtons Laws

Work and Energy

Conservation of Energy

Gravitation

Systems of Particles

Collisions

Rotation of a Rigid Body

Dynamics of a Rigid Body

Statics and Elasticity

Oscillations

Waves

Sound

Fluid Mechanics

The Ideal Gas

Heat

Thermodynamics

Electric Force and the Electric Charge

The Electric Field

Gauss Law

Electrostatic Potential and Energy

Capacitors and Dielectrics

Currents and Ohms Law

Direct Current Circuits

Magnetic Force and Field

Charges and Currents in Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

Reflection, Refraction, and Optics

Interference and Diffraction

The Theory of Special Relativity

Quanta of Light

Spectral Lines, Bohrs Theory, and Quantum Mechanics

Quantum Structure of Atoms, Molecules, and Solids

Nuclei

Filters

The ? $W ^ { + } , W \text {, and } Z ^ { \circ }$ particles are similar to the photon; but the one difference is that they