A Planet Travels in an Elliptical Orbit About a Star

question 45

Multiple Choice

A planet travels in an elliptical orbit about a star X as shown. The magnitude of the acceleration of the planet is:

• A) greatest at point Q
• B) greatest at point S
• C) greatest at point U
• D) greatest at point W
• E) the same at all points

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Definitions:

Molecule

The smallest particle in a chemical element or compound that has the chemical properties of that element or compound, composed of atoms bonded together.

Anisole

An organic compound, methoxybenzene, characterized by a methoxy group attached to a benzene ring, used as a precursor in perfumery and pharmaceuticals.

Compound

An entity made up of multiple elements chemically joined in constant ratios.

Chebysheff's Theorem

A statistical theorem stating that for any data set or distribution, no matter the shape, a minimum proportion of values must lie within a certain number of standard deviations from the mean.