If We Found a Star Cluster at the Edge of the Disk

question 90

Multiple Choice

If we found a star cluster at the edge of the disk of the Milky Way at a distance of 10 kpc from the center, and it orbited with a velocity of 250 km/s, what would be the total mass enclosed within this radius?

• A) 1.4 * 10¹¹ M_SUN
• B) 7.2 * 10¹¹ M_SUN
• C) 9.5* 10¹¹ M_SUN
• D) 4.2 * 10¹² M_SUN
• E) 8.0 *10¹² M_SUN

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Definitions:

Pleasant Consequence

A positive outcome or reward that follows a desired behavior, often used in reinforcing such behavior.

Positive Reinforcement

in behavioral psychology, it is the introduction of a rewarding stimulus following a desired behavior, encouraging its repetition.

Punish Openly

The act of enforcing a penalty or discipline in a public or transparent manner, often as a deterrent to others.

Successive Approximations

A method where a series of increasingly accurate estimates or steps lead to a desired response or outcome.