The Total Mass of a Binary System Can Be Calculated

question 37

Multiple Choice

The total mass of a binary system can be calculated from

• A)the ratio of the angular separation from the center of mass of each of the stars.
• B)the distance to the binary and its radial velocity.
• C)the semimajor axis and period of the orbit.
• D)the radial velocities of the two stars.
• E)the time required for the smaller star to eclipse the larger star.

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Definitions:

Arthrography

A diagnostic imaging technique used to visualize the inside of a joint using X-ray after injecting a contrast medium.

Arthroscopy

A minimally invasive surgical procedure used to diagnose and treat issues within a joint, using a type of endoscope inserted through a small incision.

Goniometry

The measurement of angles, especially used in assessing joint flexibility in physical therapy.

Radiopaque

Describes substances that do not allow the passage of X-rays or other forms of radiation, thereby appearing white or light on radiographic images.