Question 1

An atom's "atomic number" is

Accepted Answer

A)  the number of protons in its nucleus. 
B)  the number of electrons orbiting the nucleus of the ionized atom. 
C)  Both of the above. 
D)  None of the above. 
A)  the number of protons in its nucleus. 
B)  the number of electrons orbiting the nucleus of the ionized atom. 
C)  Both of the above. 
D)  None of the above.

Question 2

If a transparency sheet is rubbed with tissue and the transparency and the tissue are then held at rest a short distance from each other, the force between them will be

Accepted Answer

A)  zero. 
B)  an attractive magnetic force. 
C)  a repulsive electric force. 
D)  an attractive electric force. 
E)  a repulsive magnetic force. 
A)  zero. 
B)  an attractive magnetic force. 
C)  a repulsive electric force. 
D)  an attractive electric force. 
E)  a repulsive magnetic force.

Question 3

The atomic nucleus contains

Accepted Answer

A)  yogurt. 
B)  neutrons and electrons. 
C)  protons only. 
D)  protons and neutrons. 
E)  protons and electrons. 
A)  yogurt. 
B)  neutrons and electrons. 
C)  protons only. 
D)  protons and neutrons. 
E)  protons and electrons.

Question 4

If the distance between two charged objects and the charge on each of them are all doubled, the electric force by either one on the other is

Accepted Answer

A)  reduced to one- quarter of the original force. 
B)  halved. 
C)  unchanged. 
D)  doubled. 
E)  quadrupled. 
A)  reduced to one- quarter of the original force. 
B)  halved. 
C)  unchanged. 
D)  doubled. 
E)  quadrupled.

Question 5

Suppose you charge two transparencies by rubbing and then hold them near each other without letting them touch, and shake both of them back and forth. Regarding the electric and magnetic forces they exert on each other,

Accepted Answer

A)  they will exert both and electric and magnetic forces. 
B)  they will exert electric forces but not magnetic forces. 
C)  they will exert electromagnetic forces only after five o'clock on Friday afternoons. 
D)  they will exert magnetic forces but not electric forces. 
E)  they will exert neither electric nor magnetic forces because they are not in contact with each other. 
A)  they will exert both and electric and magnetic forces. 
B)  they will exert electric forces but not magnetic forces. 
C)  they will exert electromagnetic forces only after five o'clock on Friday afternoons. 
D)  they will exert magnetic forces but not electric forces. 
E)  they will exert neither electric nor magnetic forces because they are not in contact with each other.

Question 6

If two transparency sheets are rubbed with tissue and the transparency sheets are then held at rest a short distance from each other, the force between them will be

Accepted Answer

A)  a repulsive magnetic force. 
B)  zero. 
C)  an attractive magnetic force. 
D)  an attractive electric force. 
E)  a repulsive electric force. 
A)  a repulsive magnetic force. 
B)  zero. 
C)  an attractive magnetic force. 
D)  an attractive electric force. 
E)  a repulsive electric force.

Question 7

If two electrons are near each other and are moving past each other, the electromagnetic forces they exert on each other will be

Accepted Answer

A)  magnetic but not electric. 
B)  electric but not magnetic. 
C)  zero. 
D)  both electric and magnetic. 
A)  magnetic but not electric. 
B)  electric but not magnetic. 
C)  zero. 
D)  both electric and magnetic.

Question 8

If two electrons are at rest a short distance apart, the electromagnetic forces they exert on each other will be

Accepted Answer

A)  magnetic but not electric. 
B)  electric but not magnetic. 
C)  zero. 
D)  both electric and magnetic. 
A)  magnetic but not electric. 
B)  electric but not magnetic. 
C)  zero. 
D)  both electric and magnetic.

Question 9

An atom's "atomic number" is

Accepted Answer

A)  the number of protons in its nucleus. 
B)  the number of electrons orbiting the nucleus of the neutral atom. 
C)  Both of the above. 
D)  the number of electrons orbiting the nucleus of the ionized atom. 
E)  All of the above. 
A)  the number of protons in its nucleus. 
B)  the number of electrons orbiting the nucleus of the neutral atom. 
C)  Both of the above. 
D)  the number of electrons orbiting the nucleus of the ionized atom. 
E)  All of the above.

Question 10

One difference between moving charges and stationary charges is that

Accepted Answer

A)  moving charges exert only magnetic forces, while stationary charges exert both electric and magnetic forces. 
B)  moving charges exert both electric and magnetic forces, while stationary charges exert only electric forces. 
C)  moving charges exert only magnetic forces, while stationary charges exert only electric forces. 
D)  moving charges stay slender, while stationary charges are couch potatoes. 
E)  moving charges exert both electric and magnetic forces, while stationary charges exert neither electric nor magnetic forces. 
A)  moving charges exert only magnetic forces, while stationary charges exert both electric and magnetic forces. 
B)  moving charges exert both electric and magnetic forces, while stationary charges exert only electric forces. 
C)  moving charges exert only magnetic forces, while stationary charges exert only electric forces. 
D)  moving charges stay slender, while stationary charges are couch potatoes. 
E)  moving charges exert both electric and magnetic forces, while stationary charges exert neither electric nor magnetic forces.

An atom's "atomic number" is

If a transparency sheet is rubbed with tissue and the transparency and the tissue are then held at rest a short distance from each other, the force between them will be

The atomic nucleus contains

If the distance between two charged objects and the charge on each of them are all doubled, the electric force by either one on the other is

Suppose you charge two transparencies by rubbing and then hold them near each other without letting them touch, and shake both of them back and forth. Regarding the electric and magnetic forces they exert on each other,

If two transparency sheets are rubbed with tissue and the transparency sheets are then held at rest a short distance from each other, the force between them will be

If two electrons are near each other and are moving past each other, the electromagnetic forces they exert on each other will be

If two electrons are at rest a short distance apart, the electromagnetic forces they exert on each other will be

An atom's "atomic number" is

One difference between moving charges and stationary charges is that

The Way of Science: Experience and Reason

Atoms: the Nature of Things

How Things Move: Galileo Asks the Right Questions

Why Things Move As They Do

Newtons Universe

Conservation of Energy: You Cant Get Ahead

Second Law of Thermodynamics: and You Cant Even Break Even

Electromagnetism Radiation and Global Climate Change

The Special Theory of Relativity

The General Theory of Relativity and the New Cosmology

The Quantum Idea

The Quantum Universe

The Nucleus and Radioactivity: an New Force

Fusion and Fission: and a New Energy

The Energy Challenge

Quantum Fields: Relativity Meets the Quantum

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Exam 8: Light and Electromagnetism

An atom's "atomic number" is

If a transparency sheet is rubbed with tissue and the transparency and the tissue are then held at rest a short distance from each other, the force between them will be

The atomic nucleus contains

If the distance between two charged objects and the charge on each of them are all doubled, the electric force by either one on the other is

Suppose you charge two transparencies by rubbing and then hold them near each other without letting them touch, and shake both of them back and forth. Regarding the electric and magnetic forces they exert on each other,

If two transparency sheets are rubbed with tissue and the transparency sheets are then held at rest a short distance from each other, the force between them will be

If two electrons are near each other and are moving past each other, the electromagnetic forces they exert on each other will be

If two electrons are at rest a short distance apart, the electromagnetic forces they exert on each other will be

An atom's "atomic number" is

One difference between moving charges and stationary charges is that

The Way of Science: Experience and Reason

Atoms: the Nature of Things

How Things Move: Galileo Asks the Right Questions

Why Things Move As They Do

Newtons Universe

Conservation of Energy: You Cant Get Ahead

Second Law of Thermodynamics: and You Cant Even Break Even

Electromagnetism Radiation and Global Climate Change

The Special Theory of Relativity

The General Theory of Relativity and the New Cosmology

The Quantum Idea

The Quantum Universe

The Nucleus and Radioactivity: an New Force

Fusion and Fission: and a New Energy

The Energy Challenge

Quantum Fields: Relativity Meets the Quantum

Filters