What Is the Most Reliable Way to Measure the Mass

question 101

Multiple Choice

What is the most reliable way to measure the mass of a star for which the distance is unknown?

• A)Apply the mass-temperature relation.
• B)Measure its orbit around another star.
• C)Measure its radius, then compute its volume and multiply by density to get the mass.
• D)Compute its spectroscopic parallax, then apply the mass-luminosity relation.

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Definitions:

Raw Materials Inventory

Raw materials inventory refers to the stock of raw materials on hand at any given time that are made available for use in the production process.

Fixed Costs

Expenses that do not change in total with changes in the level of production or sales, such as rent, salaries, and insurance.

Relevant Range

The range of activity within which the assumptions about variable and fixed cost behaviors remain valid.

Per Unit Basis

A method of calculating financial figures or metrics for each individual unit of production or sale.