The Escape Velocity at the Surface of Earth Is Approximately

question 54

Multiple Choice

The escape velocity at the surface of Earth is approximately 8 km/s. What is the mass, in units of Earth's mass, of a planet with twice the radius of Earth for which the escape speed is twice that for Earth?

• A) 2
• B) 4
• C) 8
• D) 1/2
• E) 1/4

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Definitions:

Perfect Competition

A market structure characterized by a large number of small firms, homogeneous products, and free entry and exit, leading to price-taking behavior.

Standardized Product

Output of different producers regarded by consumers as the same good; also referred to as a commodity.

Easy Entry And Exit

Characteristics of a market where companies can freely enter or leave without significant barriers or costs.

Patented Prescription Drug

A medication that is protected by a patent, giving its manufacturer the exclusive right to produce and sell the drug for a certain period.