Satellites: a Satellite in a Circular Orbit of Radius R

question 49

Multiple Choice

Satellites: A satellite in a circular orbit of radius R around planet X has an orbital period T. If Planet X had one-fourth as much mass, the orbital period of this satellite in an orbit of the same radius would be

• A) 4T.
• B) 2T.
• C) T .
• D) T/2.
• E) T/4.

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Definitions:

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, widely used in finance to gauge the volatility of an investment.

Probability Distribution

A statistical function that describes all the possible values and likelihoods that a random variable can take within a given range.

Variances of Stocks

Measures of the dispersion of returns for a given stock, used to assess the risk associated with holding the stock.

Return on Stock

The gain or loss on an investment in stock, represented as a percentage of the investment's initial cost.