Question 1

What is the wavelength of a 2.0-GeV electron?

Accepted Answer

A) 1.2 fm 
B) 0.62 fm 
C) 0.099 fm 
D) less than 10-18 m 
E) 2 fm 
A) 1.2 fm 
B) 0.62 fm 
C) 0.099 fm 
D) less than 10-18 m 
E) 2 fm

Question 2

If a new force were discovered that had a range on the order of 10-18 meters:
(a) predict the mass of the exchange particle.
(b) how long is conservation of energy violated in the exchange of this particle?

Accepted Answer

(a) 4 × 10

Question 3

A significant step in "unifying" the forces of nature was the discovery that two of the so-called fundamental forces were two parts of a single force. The two forces that were so unified were

Accepted Answer

A) the electromagnetic force and the weak force. 
B) the electromagnetic force and the strong nuclear force. 
C) the electromagnetic force and the gravity force. 
D) the weak force and the strong nuclear force. 
E) the weak force and the gravity force. 
A) the electromagnetic force and the weak force. 
B) the electromagnetic force and the strong nuclear force. 
C) the electromagnetic force and the gravity force. 
D) the weak force and the strong nuclear force. 
E) the weak force and the gravity force.

Question 4

A cyclotron operates at 10 MHz. What magnetic field is needed to accelerate protons?

Accepted Answer

A) 0.12 T 
B) 0.25 T 
C) 0.66 T 
D) 1.3 T 
E) 1.5 T 
A) 0.12 T 
B) 0.25 T 
C) 0.66 T 
D) 1.3 T 
E) 1.5 T

Question 5

The strong nuclear force is how many times as strong as the gravitation force?

Accepted Answer

A) 1038 
B) 1 (They are the same.) 
C) 2 
D) 100 
E) 106 
A) 1038 
B) 1 (They are the same.) 
C) 2 
D) 100 
E) 106

Question 6

If both 30-GeV electrons and 30-GeV protons are used to probe the nucleus, which has the shorter wavelength?

Accepted Answer

A) They are the same. 
B) the electrons 
C) the protons 
D) It depends on the nucleus probed. 
E) They are never the same. 
A) They are the same. 
B) the electrons 
C) the protons 
D) It depends on the nucleus probed. 
E) They are never the same.

Exam 43: Elementary Particle

What is the wavelength of a 2.0-GeV electron?

If a new force were discovered that had a range on the order of 10-18 meters: (a) predict the mass of the exchange particle. (b) how long is conservation of energy violated in the exchange of this particle?

A significant step in "unifying" the forces of nature was the discovery that two of the so-called fundamental forces were two parts of a single force. The two forces that were so unified were

A cyclotron operates at 10 MHz. What magnetic field is needed to accelerate protons?

The strong nuclear force is how many times as strong as the gravitation force?

If both 30-GeV electrons and 30-GeV protons are used to probe the nucleus, which has the shorter wavelength?

Introduction, Measurement, Estimating

Describing Motion: Kinematics in One Dimension

Kinematics in Two or Three Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Using Newtons Laws: Friction, Circular Motion, Drag Forces

Gravitation and Newtons6 Synthesis

Work and Energy

Conservation of Energy

Linear Momentum

Rotational Motion

Angular Momentum; General Rotation

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations

Wave Motion

Sound

Temperature, Thermal Expansion, and the Ideal Gas Law

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance, Dielectrics, Electric Energy Storage

Electric Currents and Resistance

Dc Circuits

Magnetism

Sources of Magnetic Field

Electromagnetic Induction and Faradays Law

Inductance, Electromagnetic Oscillations, and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Light: Reflection and Refraction

Lenses and Optical Instruments

The Wave Nature of Light; Interference

Diffraction and Polarization

Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics

Quantum Mechanics of Atoms

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy: Efects and Uses of Radiation

Astrophysics and Cosmology

Filters

If a new force were discovered that had a range on the order of 10^-18 meters: (a) predict the mass of the exchange particle. (b) how long is conservation of energy violated in the exchange of this particle?