Question 1

A kilowatt-hour is a unit that measures

Accepted Answer

A)  work per unit of time. 
B)  energy. 
C)  power. 
D)  work × time. 
A)  work per unit of time. 
B)  energy. 
C)  power. 
D)  work × time.

Question 2

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,grea

Question 3

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 4

A student weighing 300 N climbed a flight of stairs 5.0 m high in 6 s.How much work was done by the student?

Accepted Answer

A)  1500 J 
B)  1800 J 
C)  1500 W 
D)  1800 W 
E)  50 W 
A)  1500 J 
B)  1800 J 
C)  1500 W 
D)  1800 W 
E)  50 W

Question 5

The potential energy of a pendulum is least

Accepted Answer

A)  when its potential energy is greatest. 
B)  at the top of its swing. 
C)  at the bottom of its swing. 
D)  when its total energy is greatest. 
A)  when its potential energy is greatest. 
B)  at the top of its swing. 
C)  at the bottom of its swing. 
D)  when its total energy is greatest.

Question 6

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

A kilowatt-hour is a unit that measures

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?

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

A student weighing 300 N climbed a flight of stairs 5.0 m high in 6 s.How much work was done by the student?

The potential energy of a pendulum is least

Which of the following is a unit of power?

Measurement

Motion

Force and Motion

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

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 G Eology and P Late Tectonics

Minerals, rocks, and Volcanoes

Surface Processes

Geologic Time

Filters

Exam 4: Work and Energy

A kilowatt-hour is a unit that measures

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?

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

A student weighing 300 N climbed a flight of stairs 5.0 m high in 6 s.How much work was done by the student?

The potential energy of a pendulum is least

Which of the following is a unit of power?

Measurement

Motion

Force and Motion

Temperature and Heat

Waves and Sound

Optics and Wave Effects

Electricity and Magnetism

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 G Eology and P Late Tectonics

Minerals, rocks, and Volcanoes

Surface Processes

Geologic Time

Filters

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