In Gulliver's Travels, Jonathan Swift Wrote About a Country Where

question 78

Multiple Choice

In Gulliver's Travels, Jonathan Swift wrote about a country where astronomers had found that Mars had two moons. (The moons of Mars were unknown at that time.) "They have likewise discovered two lesser stars, or satellites, which revolve about Mars, whereof the innermost is distant from the center of the primary planet exactly three of his diameters, and the outermost five; the former revolves in the space of ten hours, and the latter in twenty-one and a half..." If this information were correct, what would the mass of Mars be? The radius of Mars is 3,393,500 m and G = 6.67 x 10^-11 N·m²/kg².

• A) 3.86 × 10²⁴ kg
• B) 6.45 × 10²³ kg
• C) 5.67 × 10²¹ kg
• D) 2.83 × 10²¹ kg
• E) 4.78 × 10²⁰ kg

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Definitions:

Hornworts

A group of non-vascular plants belonging to the division Bryophyta, characterized by a flat, green plant body and a sporophyte that resembles a small horn.

Angiosperms

A large group of flowering plants that produce seeds enclosed within a fruit.

Seed Vaults

Secure storage facilities built to preserve genetic diversity by storing seeds under optimal conditions to ensure their long-term viability.

Genetic Diversity

The total number of genetic characteristics in the genetic makeup of a species, contributing to its ability to adapt to various environmental changes.