Planet Z-34 Has a Mass Equal to One-Third That of Earth

question 20

Multiple Choice

Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth. With g representing, as usual, the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the surface of Z-34 is

• A) g/3.
• B) 3 g.
• C) 6 g.
• D) g/9.
• E) 9 g.

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Definitions:

Hemoglobin

This substance in red blood cells facilitates the transfer of oxygen from the lungs to the body's organs and tissues and carries carbon dioxide from these areas back to the lungs.

Embryonic

Pertaining to the embryo, an early developmental stage in multicellular organisms after fertilization but before birth or hatching.

Carbonic Anhydrase

An enzyme that helps regulate pH and fluid balance by catalyzing the conversion between carbon dioxide and water to bicarbonate and protons.

Bicarbonate Ion

A negatively charged ion (HCO3-) that is a significant component of the bicarbonate buffering system in the blood.