Two Separate Pairs of Binary Stars Are Observed

question 37

Multiple Choice

Two separate pairs of binary stars are observed. The separation of the pairs is identical, but the orbital period of Pair X is 4 times the orbital period of Pair Y. How does the total mass of the stars in Pair X compare to the total mass of the stars in Pair Y?

• A)Pair Y has a total mass 2 times greater than Pair X.
• B)Pair Y has a total mass 16 times greater than Pair X.
• C)Pair X has a total mass 16 times greater than Pair Y.
• D)Pair X has a total mass 2 times greater than Pair Y.

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Definitions:

Genetics

The branch of biology that studies genes, genetic variation, and heredity in organisms.

Personality

The assembly of elements and qualities that shape a person's singular character.

Identical Twins

Twins resulting from one zygote that splits and forms two embryos, sharing exactly the same genetic material.

Big Five

A psychological theory that describes human personality through five broad dimensions: openness, conscientiousness, extraversion, agreeableness, and neuroticism.