The Escape Velocity at the Surface of Earth Is Approximately

question 28

Multiple Choice

The escape velocity at the surface of Earth is approximately 11 km/s.What is the mass, in units of M_E (the mass of the Earth) , of a planet with twice the radius of Earth for which the escape speed is twice that for Earth?

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

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Labour Hour

A unit of measure representing an hour of work performed by an employee, used for calculating labor costs or productivity.

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