Question 1

The amount of gravitational potential energy released as an object falls depends on

Accepted Answer

A)  the distance it falls. 
B)  its speed at the time it begins falling. 
C)  the distance it falls and its speed at the time it begins falling. 
D)  neither the distance it falls nor its speed at the time it begins falling. 
A)  the distance it falls. 
B)  its speed at the time it begins falling. 
C)  the distance it falls and its speed at the time it begins falling. 
D)  neither the distance it falls nor its speed at the time it begins falling.

Question 2

Which of the following scenarios involves energy that we would typically calculate with Einstein's formula E=mc²?

Accepted Answer

A)  A small amount of the hydrogen in of a nuclear bomb becomes energy as fusion converts the hydrogen to helium. 
B)  An object accelerated to a great speed has a lot of kinetic energy. 
C)  A mass raised to a great height has a lot of gravitational potential energy. 
D)  A burning piece of wood produces light and heat, therefore giving off radiative and thermal energy. 
A)  A small amount of the hydrogen in of a nuclear bomb becomes energy as fusion converts the hydrogen to helium. 
B)  An object accelerated to a great speed has a lot of kinetic energy. 
C)  A mass raised to a great height has a lot of gravitational potential energy. 
D)  A burning piece of wood produces light and heat, therefore giving off radiative and thermal energy.

Question 3

What do we mean by the orbital energy of an orbiting object (such as a planet, moon, or satellite)?

Accepted Answer

A)  Orbital energy is the sum of the object's kinetic energy and its gravitational potential energy as it moves through its orbit. 
B)  Orbital energy is the object's kinetic energy as it moves through its orbit. 
C)  Orbital energy is a measure of the object's speed as it moves through its orbit. 
D)  Orbital energy is the amount of energy required for the object to leave orbit and escape into space. 
A)  Orbital energy is the sum of the object's kinetic energy and its gravitational potential energy as it moves through its orbit. 
B)  Orbital energy is the object's kinetic energy as it moves through its orbit. 
C)  Orbital energy is a measure of the object's speed as it moves through its orbit. 
D)  Orbital energy is the amount of energy required for the object to leave orbit and escape into space.

The amount of gravitational potential energy released as an object falls depends on

Which of the following scenarios involves energy that we would typically calculate with Einstein's formula E=mc²?

What do we mean by the orbital energy of an orbiting object (such as a planet, moon, or satellite)?

Our Place in the Universe

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Formation of Planetary Systems: Our Solar System and Beyond

Earth and the Terrestrial Worlds

Jovian Planet Systems

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Galaxies and the Foundation of Modern Cosmology

Dark Matter, Dark Energy, and the Fate of the Universe

The Beginning of Time

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Exam 4: Making Sense of the Universe: Understanding Motion, Energy, and Gravity

The amount of gravitational potential energy released as an object falls depends on

Which of the following scenarios involves energy that we would typically calculate with Einstein's formula E=mc²?

What do we mean by the orbital energy of an orbiting object (such as a planet, moon, or satellite)?

Our Place in the Universe

Discovering the Universe for Yourself

The Science of Astronomy

Light: the Cosmic Messenger

Formation of Planetary Systems: Our Solar System and Beyond

Earth and the Terrestrial Worlds

Jovian Planet Systems

Asteroids, Comets, and Dwarf Planets: Their Nature, Orbits, and Impacts

Our Star

Surveying the Stars

Star Stuff

Bizarre Stellar Graveyard

Our Galaxy

Galaxies and the Foundation of Modern Cosmology

Dark Matter, Dark Energy, and the Fate of the Universe

The Beginning of Time

Life in the Universe

Filters