An Astronomer Is Observing a Binary System with Two Stars

question 209

Multiple Choice

An astronomer is observing a binary system with two stars of masses M₁ and M₂. She determines a, the semimajor axis (also the average distance between the stars) and P, the period of their motion. Using this information in Kepler's third law she can calculate

• A) M₁ or M₂ but not both.
• B) M₁/M₂.
• C) M₁ + M₂.
• D) both M₁ and M₂.

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Definitions:

Inductive Technique

A reasoning approach that moves from specific instances to a generalized conclusion or theory.

Warmth-coldness

A psychological dimension characterizing interpersonal relationships or personality traits, ranging from warmth (friendly, compassionate) to coldness (unfriendly, indifferent).

Restrictiveness-permissiveness

A spectrum describing parenting or educational styles, with restrictiveness involving strict rules and permissiveness entailing more freedom and fewer rules.

Baumrind

Refers to Diana Baumrind, a developmental psychologist known for her research on parenting styles and their effects on children.