Two Planets Having Equal Masses Are in Circular Orbit Around

question 31

Multiple Choice

Two planets having equal masses are in circular orbit around a star.Planet A has a smaller orbital radius than planet B.Which statement is true?

• A) Planet A has more kinetic energy, less potential energy, and less mechanical energy (potential plus kinetic) than planet B.
• B) Planet A has more kinetic energy, more potential energy, and more mechanical energy (potential plus kinetic) than planet B.
• C) Planet A has more kinetic energy, less potential energy, and more mechanical energy (potential plus kinetic) than planet B.
• D) Planet A and planet B have the same amount of mechanical energy (potential plus kinetic).

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Definitions:

UN Global Compact

A voluntary initiative based on CEO commitments to implement universal sustainability principles and to take steps to support UN goals.

Regulatory Agency

A governmental body responsible for enforcing laws and regulations to protect public health, safety, environment, and to ensure fair market competition.

Utilitarianism

An ethical theory that states that the best action is the one that maximizes utility, usually defined as that which produces the greatest well-being of the greatest number of people.

Greenpeace

An international environmental organization that promotes earth-friendly policies and actions.