You Discover a Moon Orbiting a Planet

question 28

Essay

You discover a moon orbiting a planet.The moon has an orbital period of three weeks,and the average distance between the moon and planet is 1.2 × 10⁶ km.What is the planet's mass? Compare its mass to that of Jupiter,which is 1.9 × 10²⁷ kg.

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Definitions:

Covariance

A statistical measure that indicates the extent to which two variables change together.

Variances

Variances measure the dispersion of a set of data points around their mean value, indicating how spread out the data is.

Portfolio

A collection of financial investments like stocks, bonds, commodities, cash, and cash equivalents, including closed-end funds and exchange-traded funds (ETFs).

Expected Return

The weighted average of all possible returns for an investment, taking into account the likelihood of each outcome.