By Comparing Globular Clusters, You Find That Cluster A's RR

question 48

Multiple Choice

By comparing globular clusters, you find that Cluster A's RR Lyrae stars are 100 times fainter than Cluster B's RR Lyrae stars. You know that Cluster A's stars are 1.5 times more luminous than Cluster B's stars, because Cluster A is more metal-rich and somewhat younger. How do the clusters' distances compare?

• A) Cluster A is 65 times farther away than Cluster B.
• B) Cluster A is 12 times farther away than Cluster B.
• C) Cluster A is 10 times farther away than Cluster B.
• D) Cluster A is seven times farther away than Cluster B.
• E) Cluster A and Cluster B are at approximately the same distance.

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Definitions:

Dissociative Amnesia

A disorder characterized by the inability to recall important personal information, usually resulting from trauma or stress.

Organic Amnesia

A memory disorder usually caused by brain damage or disease, where the ability to learn new information or retrieve information formed before the incident is impaired.

Psychogenic Amnesia

A memory disorder characterized by sudden temporary memory loss, that cannot be attributed to a neurological condition.

Sexual Instincts

Innate or biological urges related to sexuality and reproduction.