A Typical Comet in an Elliptical Orbit Around the Sun

question 27

Multiple Choice

A typical comet in an elliptical orbit around the Sun will lose what fraction of its mass by melting each time it passes close to the Sun (i.e., at each perihelion passage) ?

• A) 1/1000
• B) very small fraction, less than 1/10,000
• C) 1/10
• D) 1/100

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Definitions:

Repolarization

The process by which cells restore their resting negative membrane potential after depolarization.

Cardiac Muscle Cells

Specialized muscle cells found in the heart that contract rhythmically and involuntarily to pump blood throughout the body.

Capillary Network

A complex intertwining of capillaries supplying organs and tissues with nutrients and oxygen and removing waste products.

Oxygen Deficit

Oxygen necessary for the synthesis of the ATP required to remove lactic acid produced by anaerobic respiration.