If a Satellite Sent to Mars Is Designed to Return

question 68

Multiple Choice

If a satellite sent to Mars is designed to return a rock sample to Earth, how fast must the satellite be launched from its surface in order to escape Mars's gravity? For reference, Mars has a mass of 6 * 10²³ kg and a radius of 3,400 km.

• A) 100 m/s
• B) 5,000 m/s
• C) 20 m/s
• D) 20,000 m/s
• E) You must know the mass of the satellite to determine the answer.

Describe the adaptations of nonvascular plants to terrestrial life.

Recognize the derived features that distinguish land plants from their aquatic ancestors.

Understand the significance of gametophytes in the plant life cycle.

Distinguish between various types of pollination mechanisms.

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Definitions:

Long-Run Equilibrium

A state in which all factors of production and costs are variable, allowing for the adjustment of all inputs, leading to optimal allocation of resources in the market.

Increasing Cost Industry

An industry in which production costs increase as output expands, typically due to factors such as input limitations and increased demand for inputs.

Long-Run Supply Curve

A curve showing the relationship between price and quantity supplied that takes into account all possible adjustments in inputs and outputs.

Constant-cost Industry

An industry where the costs of production do not change as the total output in the industry changes.