Phobos Orbits Mars in a Prograde Orbit with a Period

question 40

Multiple Choice

Phobos orbits Mars in a prograde orbit with a period less than the rotational period of Mars itself. What consequence follows from this?

• A) Phobos rises in the west and sets in the east.
• B) Phobos rises in the east and sets in the west.
• C) Phobos is in a stationary orbit, always over the same point on Mars.
• D) The situation described violates Kepler's third law: the farther out an orbit, the longer its period.

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Marginal Revenue

The additional income that is gained from selling one more unit of a product or service.

Consumer Surplus

The discrepancy between the total sum consumers are prepared and capable of paying for a good or service, and the total sum they end up paying.

Profit Maximize

The method through which a company identifies the optimal pricing and production volume to maximize its profits.

Output

Output is the total amount of goods or services produced by a company, sector, or economy within a certain period, indicating the level of productivity and capacity utilization.