You Are Measuring How Velocity Changes with Time of Two

question 4

Multiple Choice

You are measuring how velocity changes with time of two stars like the Sun in order to detect their planets. Both stars have a velocity curve with a periods of 2 years, but the maximum size (peak- to- peak amplitude) of the velocity curve of star A is 100 km/s, and for star B it is 200 km/s. What causes this difference? Assume the planets are named after their stars.

• A)Planet A is less massive than Planet B.
• B)Planet A is more massive than Planet B.
• C)Planet A is farther from Star A than Planet B is from Star B.
• D)Planet A is closer to Star A than Planet B is to Star B.
• E)Not possible to say, since you're measuring the velocity curve of the stars, not the planets.

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Definitions:

Intelligence Quotient

A measure of a person's intellectual abilities in relation to the average performance of individuals in the same age group.

Mental Age

A measure of an individual's mental aptitude based on the average abilities of people at a certain chronological age.

Chronological Age

The actual age of a person or object, measured in years from the date of birth or creation.

Monozygotic Twins

Twins who originate from a single fertilized egg, making them genetically identical.