The Escape Velocity of a Planet Which Is Twice the Mass

question 36

Multiple Choice

The escape velocity of a planet which is twice the mass of the Earth is ______ times the escape velocity of the Earth.

• A) \(\frac { 1 } { \sqrt { 2 } }\)
• B) \(\sqrt { 2 }\)
• C) 2
• D) 4
• E) 8

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Definitions:

Z-score

A statistical measure that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

Sampling Distribution

The sampling distribution is a probability distribution of a statistic obtained by selecting all possible samples of a specific size from a population.

Sampling Distribution

A probability distribution of a statistic obtained from a large number of samples drawn from a specific population.

Mean

The average of a set of numbers, calculated by dividing the sum of all the values by the number of values.