What Is the Only Way to Measure the Mass of a Star

question 7

Multiple Choice

What is the only way to measure the mass of a star accurately?

• A) Measure its gravitational effect on another object.
• B) Measure its spectral type and luminosity class,then use the H-R diagram.
• C) It is not possible to measure the mass of a star.
• D) Measure its distance using trigonometric parallax and its brightness using photometry.

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Definitions:

Pure Monopoly

A market structure where a single supplier controls all production and sales of a particular product or service, with no close substitutes available.

Federal Government

The national government of a federated state, which holds the authority over the entire nation and its international affairs, distinct from state or local governments.

Marketing Role

Refers to the specific set of responsibilities or activities assigned for designing, promoting, and selling products or services.

Oligopoly

A market structure characterized by a small number of firms controlling a large share of the market, leading to limited competition.