In a Binary Star System,one Component Is Found to Have

question 295

Multiple Choice

In a binary star system,one component is found to have about 3 solar masses,the other about 7 solar masses.The 3-solar-mass star is visible from Earth,but the 7-solar-mass star is not.Theoretical considerations tell us that the 7-solar-mass star must be a:

• A) neutron star.
• B) cool planetary object.
• C) white dwarf.
• D) black hole.

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Definitions:

Respiratory Rate

The number of breaths taken per minute, an important vital sign indicating the efficiency of the respiratory system.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, and absorbed by plants in photosynthesis.

pH

A numerical scale used to specify the acidity or basicity of an aqueous solution, where 7 is neutral, values less than 7 are acidic, and values greater than 7 are basic or alkaline.

Expiratory Reserve Volume

The additional amount of air that can be forcefully exhaled after a normal exhalation, used to measure lung function.