Question 1

Which of the following is a vector quantity?

Accepted Answer

A)  Force 
B)  Power 
C)  Work 
D)  Time 
E)  None of these 
A)  Force 
B)  Power 
C)  Work 
D)  Time 
E)  None of these

Question 2

Which of the following is not a unit of work?

Accepted Answer

A)  ft · lb 
B)  N · m 
C)  joule 
D)  watt 
A)  ft · lb 
B)  N · m 
C)  joule 
D)  watt

Question 3

If you lift a 35-N weight vertically 50 m above the ground, you are

Accepted Answer

A)  doing work against gravity. 
B)  doing work against friction. 
C)  doing work against inertia. 
D)  doing none of these. 
A)  doing work against gravity. 
B)  doing work against friction. 
C)  doing work against inertia. 
D)  doing none of these.

Question 4

The SI unit of power is the ______________.

Accepted Answer

The answer of The SI unit of power is the...

Question 5

The value of an object's gravitational potential energy depends on the ______________.

Accepted Answer

The answer of The value of an object's gravitational potential...

Question 6

The average adult radiates heat energy at the same rate as

Accepted Answer

A)  a 10-W light bulb. 
B)  a 100-kW light bulb. 
C)  a 100-W light bulb. 
D)  none of these. 
A)  a 10-W light bulb. 
B)  a 100-kW light bulb. 
C)  a 100-W light bulb. 
D)  none of these.

Question 7

A 8-kg object moves vertically a distance of 3 m. Its potential energy has changed by approximately how much?

Accepted Answer

A)  It has increased by 24 J. 
B)  It has decreased by 240 J. 
C)  It has decreased by 24 J. 
D)  It has increased by 240 J. 
A)  It has increased by 24 J. 
B)  It has decreased by 240 J. 
C)  It has decreased by 24 J. 
D)  It has increased by 240 J.

Question 8

A student with a 5.0-kg book bag on her way to class climbs two flights of stairs (a 10-m vertical distance) in 15 s. At what rate did the student do work in carrying the book bag up the stairs?

Accepted Answer

The answer of A student with a 5.0-kg book bag...

Question 9

Gravitational potential energy is equal to the ______________ of an object times its height.

Accepted Answer

weight, or

Question 10

Which of the following is not a unit of power?

Accepted Answer

A)  ft · lb/s 
B)  kW · h 
C)  J/s 
D)  watt 
A)  ft · lb/s 
B)  kW · h 
C)  J/s 
D)  watt

Question 11

For which of the following reasons is production of ethanol unwise?

Accepted Answer

A)  Pollutants aren't significantly reduced. 
B)  It takes twice as much fossil-fuel energy to produce ethanol than the ethanol that is produced supplies. 
C)  It can drive costs of corn higher. 
D)  All of the above. 
A)  Pollutants aren't significantly reduced. 
B)  It takes twice as much fossil-fuel energy to produce ethanol than the ethanol that is produced supplies. 
C)  It can drive costs of corn higher. 
D)  All of the above.

Question 12

The largest reserve of energy in the United States is in what form?

Accepted Answer

A)  Oil 
B)  Natural gas 
C)  Coal 
D)  Nuclear 
A)  Oil 
B)  Natural gas 
C)  Coal 
D)  Nuclear

Question 13

A joule per second (J/s) is a

Accepted Answer

A)  Watt. 
B)  Newton. 
C)  Kilogram. 
D)  Second. 
A)  Watt. 
B)  Newton. 
C)  Kilogram. 
D)  Second.

Question 14

The units of work are the same as those of ______________.

Accepted Answer

The answer of The units of work are the same...

Question 15

Work is defined as force times

Accepted Answer

A)  distance. 
B)  time. 
C)  parallel distance. 
D)  perpendicular distance. 
A)  distance. 
B)  time. 
C)  parallel distance. 
D)  perpendicular distance.

Question 16

In lifting an object, work is done against ______________.

Accepted Answer

The answer of In lifting an object, work is done...

Question 17

The energy of position is called

Accepted Answer

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

Question 18

Car B is traveling twice as fast as car A, but car A has twice the mass of car B. Which car has the greater kinetic energy and by what factor is it greater?

Accepted Answer

Car B, gre

Question 19

A system for which there are no outside effects is said to be ______________.

Accepted Answer

The answer of A system for which there are no...

Question 20

A student weighing 300 N climbs a flight of stairs 7.0 m high in 8 s. What power is required to perform this task?

Accepted Answer

A)  2100 J 
B)  2400 J 
C)  2100 W 
D)  2400 W 
E)  38 W 
A)  2100 J 
B)  2400 J 
C)  2100 W 
D)  2400 W 
E)  38 W

Which of the following is a vector quantity?

Which of the following is not a unit of work?

If you lift a 35-N weight vertically 50 m above the ground, you are

The SI unit of power is the ______________.

The value of an object's gravitational potential energy depends on the ______________.

The average adult radiates heat energy at the same rate as

A 8-kg object moves vertically a distance of 3 m. Its potential energy has changed by approximately how much?

A student with a 5.0-kg book bag on her way to class climbs two flights of stairs (a 10-m vertical distance) in 15 s. At what rate did the student do work in carrying the book bag up the stairs?

Gravitational potential energy is equal to the ______________ of an object times its height.

Which of the following is not a unit of power?

For which of the following reasons is production of ethanol unwise?

The largest reserve of energy in the United States is in what form?

A joule per second (J/s) is a

The units of work are the same as those of ______________.

Work is defined as force times

In lifting an object, work is done against ______________.

The energy of position is called

Car B is traveling twice as fast as car A, but car A has twice the mass of car B. Which car has the greater kinetic energy and by what factor is it greater?

A system for which there are no outside effects is said to be ______________.

A student weighing 300 N climbs a flight of stairs 7.0 m high in 8 s. What power is required to perform this task?

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

Which of the following is a vector quantity?

Which of the following is not a unit of work?

If you lift a 35-N weight vertically 50 m above the ground, you are

The SI unit of power is the ______________.

The value of an object's gravitational potential energy depends on the ______________.

The average adult radiates heat energy at the same rate as

A 8-kg object moves vertically a distance of 3 m. Its potential energy has changed by approximately how much?

A student with a 5.0-kg book bag on her way to class climbs two flights of stairs (a 10-m vertical distance) in 15 s. At what rate did the student do work in carrying the book bag up the stairs?

Gravitational potential energy is equal to the ______________ of an object times its height.

Which of the following is not a unit of power?

For which of the following reasons is production of ethanol unwise?

The largest reserve of energy in the United States is in what form?

A joule per second (J/s) is a

The units of work are the same as those of ______________.

Work is defined as force times

In lifting an object, work is done against ______________.

The energy of position is called

Car B is traveling twice as fast as car A, but car A has twice the mass of car B. Which car has the greater kinetic energy and by what factor is it greater?

A system for which there are no outside effects is said to be ______________.

A student weighing 300 N climbs a flight of stairs 7.0 m high in 8 s. What power is required to perform this task?

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