The Speed of a Comet in an Elliptical Orbit About

question 50

Multiple Choice

The speed of a comet in an elliptical orbit about the sun:

• A)decreases while it is receding from the sun
• B)is constant
• C)is greatest when farthest from the sun
• D)varies sinusoidally with time
• E)equals L/(mr), where L is its angular momentum, m is its mass, and r is its distance from the sun

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Definitions:

Italy

A country in Southern Europe, known for its rich history, art, architecture, and significant contribution to the cultural and historical development of Europe.

Groin Vaults

Architectural elements formed by the intersection at right angles of two barrel vaults, often used in Romanesque and Gothic church architecture to support roofs.

Ashlar Blocks

Smooth, square or rectangular stone blocks used in construction, characterized by their fine joints and uniform appearance.

Rubble

Broken bits and pieces of stone, bricks, or concrete, typically used as a foundation material in construction or left as debris from destruction.