To Determine the Sum of the Masses of a Visual

question 153

Multiple Choice

To determine the sum of the masses of a visual binary star system, what needs to be measured?

• A) temperatures and periods of the stars
• B) distance from Earth and the semimajor axis of the orbit of one star relative to the other
• C) periods and the semimajor axes of the stars
• D) temperatures and distances from Earth of the stars

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Definitions:

Productivity Growth

The increase in the efficiency of production, measured by the amount of goods and services produced per unit of input.

Unionized Workers

Employees who are members of a union, which is an organized association formed to protect and further their rights and interests.

Substitution Effect

The economic understanding that as prices rise or income decreases, consumers will replace more expensive items with less costly alternatives.

Income Effect

The change in an individual's or economy's purchasing power due to a change in income, affecting the quantity of goods and services bought.