Question 1

The United States' most abundant fuel supply is ______________.

Accepted Answer

The answer of The United States' most abundant fuel supply...

Question 2

Which of the following is not a unit of power?

Accepted Answer

A)  ft · lb/s 
B)  N · m 
C)  J/s 
D)  watt 
A)  ft · lb/s 
B)  N · m 
C)  J/s 
D)  watt

Question 3

A joule/meter (J/m) is a unit of

Accepted Answer

A)  force. 
B)  work. 
C)  energy. 
D)  power. 
A)  force. 
B)  work. 
C)  energy. 
D)  power.

Question 4

A 2-hp motor can do the same amount of work as a 1-hp motor in ______________ the time.

Accepted Answer

The answer of A 2-hp motor can do the same...

Question 5

Which of the following is a unit of power?

Accepted Answer

A)  kilowatt-hour 
B)  newton 
C)  joules per second 
D)  foot-pound 
E)  none of these 
A)  kilowatt-hour 
B)  newton 
C)  joules per second 
D)  foot-pound 
E)  none of these

Question 6

Mechanical energy

Accepted Answer

A)  is the automobile energy. 
B)  is the sum of kinetic and potential energies. 
C)  is the kinetic energy. 
D)  is the potential energy. 
A)  is the automobile energy. 
B)  is the sum of kinetic and potential energies. 
C)  is the kinetic energy. 
D)  is the potential energy.

Question 7

In pushing an object on a level surface, work is done against ______________.

Accepted Answer

The answer of In pushing an object on a level...

Question 8

An object of mass 6 kg has a speed of 4 m/s and moves a distance of 2 m. What is its kinetic energy in joules?

Accepted Answer

A)  48 
B)  24 
C)  17 
D)  12 
A)  48 
B)  24 
C)  17 
D)  12

Question 9

Although the United States has less than 5% of the world's population, it accounts for approximately ______________ of the world's annual consumption of fossil fuels.

Accepted Answer

A)  15% 
B)  25% 
C)  35% 
D)  45% 
A)  15% 
B)  25% 
C)  35% 
D)  45%

Question 10

One positive aspect of the potential use of methane hydrate as a fuel is that

Accepted Answer

A)  there is more of it than there is of coal, oil, and natural gas. 
B)  it is easy to mine. 
C)  its use will never contribute to global warming. 
D)  it exists in a pure form ready for use. 
A)  there is more of it than there is of coal, oil, and natural gas. 
B)  it is easy to mine. 
C)  its use will never contribute to global warming. 
D)  it exists in a pure form ready for use.

Question 11

It is estimated that the global reserve of methane hydrate is ______________ the global reserves of coal, oil, and natural gas.

Accepted Answer

A)  equal to 
B)  less than 
C)  twice 
D)  ten times 
A)  equal to 
B)  less than 
C)  twice 
D)  ten times

Question 12

Mechanical energy

Accepted Answer

A)  is always the total energy of a system. 
B)  is the sum of the energies of motion and position. 
C)  is always conserved. 
D)  necessarily involves gravitational potential energy. 
A)  is always the total energy of a system. 
B)  is the sum of the energies of motion and position. 
C)  is always conserved. 
D)  necessarily involves gravitational potential energy.

Question 13

A watt is one ______________ per second.

Accepted Answer

The answer of A watt is one ______________ per second....

Question 14

A student weighing 200 N climbed a flight of stairs 9.0 m high in 4 s. How much work was done by the student?

Accepted Answer

A)  1800 J 
B)  800 J 
C)  1800 W 
D)  800 W 
E)  50 W 
A)  1800 J 
B)  800 J 
C)  1800 W 
D)  800 W 
E)  50 W

Question 15

In changing from one form to another, energy is always ______________.

Accepted Answer

The answer of In changing from one form to another,...

Question 16

According to the law of conservation of energy, energy cannot be ______________ or ______________.

Accepted Answer

The answer of According to the law of conservation of...

Question 17

A kilowatt-hour is a unit that measures

Accepted Answer

A)  work per unit of time. 
B)  energy. 
C)  power. 
D)  work $\times$ time. 
A)  work per unit of time. 
B)  energy. 
C)  power. 
D)  work $\times$ time.

Question 18

Which of the following sources of energy presents the fewest pollution problems under normal operating conditions?

Accepted Answer

A)  Coal 
B)  Natural gas 
C)  Nuclear fission 
D)  Hydroelectric power 
A)  Coal 
B)  Natural gas 
C)  Nuclear fission 
D)  Hydroelectric power

Question 19

Which of the following four objects has different kinetic energy?

Accepted Answer

A)  An object of mass m moving with speed 4v 
B)  An object of mass 4m moving with speed 2v 
C)  An object of mass 16m moving with speed v 
D)  An object of mass 2m moving with speed 3v 
E)  None of these; all four objects have the same kinetic energy. 
A)  An object of mass m moving with speed 4v 
B)  An object of mass 4m moving with speed 2v 
C)  An object of mass 16m moving with speed v 
D)  An object of mass 2m moving with speed 3v 
E)  None of these; all four objects have the same kinetic energy.

Question 20

The energy of motion is called

Accepted Answer

A)  inertia. 
B)  power. 
C)  kinetic energy. 
D)  potential energy. 
A)  inertia. 
B)  power. 
C)  kinetic energy. 
D)  potential energy.

The United States' most abundant fuel supply is ______________.

Which of the following is not a unit of power?

A joule/meter (J/m) is a unit of

A 2-hp motor can do the same amount of work as a 1-hp motor in ______________ the time.

Which of the following is a unit of power?

Mechanical energy

In pushing an object on a level surface, work is done against ______________.

An object of mass 6 kg has a speed of 4 m/s and moves a distance of 2 m. What is its kinetic energy in joules?

Although the United States has less than 5% of the world's population, it accounts for approximately ______________ of the world's annual consumption of fossil fuels.

One positive aspect of the potential use of methane hydrate as a fuel is that

It is estimated that the global reserve of methane hydrate is ______________ the global reserves of coal, oil, and natural gas.

Mechanical energy

A watt is one ______________ per second.

A student weighing 200 N climbed a flight of stairs 9.0 m high in 4 s. How much work was done by the student?

In changing from one form to another, energy is always ______________.

According to the law of conservation of energy, energy cannot be or .

A kilowatt-hour is a unit that measures

Which of the following sources of energy presents the fewest pollution problems under normal operating conditions?

Which of the following four objects has different kinetic energy?

The energy of motion is called

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Chemical Reactions

Organic Chemistry

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

Geologic Time

Filters

Exam 4: Electricity and Magnetism

The United States' most abundant fuel supply is ______________.

Which of the following is not a unit of power?

A joule/meter (J/m) is a unit of

A 2-hp motor can do the same amount of work as a 1-hp motor in ______________ the time.

Which of the following is a unit of power?

Mechanical energy

In pushing an object on a level surface, work is done against ______________.

An object of mass 6 kg has a speed of 4 m/s and moves a distance of 2 m. What is its kinetic energy in joules?

Although the United States has less than 5% of the world's population, it accounts for approximately ______________ of the world's annual consumption of fossil fuels.

One positive aspect of the potential use of methane hydrate as a fuel is that

It is estimated that the global reserve of methane hydrate is ______________ the global reserves of coal, oil, and natural gas.

Mechanical energy

A watt is one ______________ per second.

A student weighing 200 N climbed a flight of stairs 9.0 m high in 4 s. How much work was done by the student?

In changing from one form to another, energy is always ______________.

According to the law of conservation of energy, energy cannot be ______________ or ______________.

A kilowatt-hour is a unit that measures

Which of the following sources of energy presents the fewest pollution problems under normal operating conditions?

Which of the following four objects has different kinetic energy?

The energy of motion is called

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Atomic Physics

Nuclear Physics

The Chemical Elements

Chemical Bonding

Chemical Reactions

Organic Chemistry

Place and Time

The Solar System

Moons and Small Solar System Bodies

The Universe

The Atmosphere

Atmospheric Effects

Structural Geology and Plate Tectonics

Minerals Rocks and Volcanoes

Surface Processes

Geologic Time

Filters

According to the law of conservation of energy, energy cannot be or .