If You Measure the Velocity of a Cloud of Gas

question 85

Multiple Choice

If you measure the velocity of a cloud of gas that is rotating around the center of a galaxy in a circular orbit with radius R, you can determine:

• A) the total mass of the galaxy
• B) the mass of the stars and gas in the galaxy
• C) the mass of the galaxy enclosed within the radius R
• D) the mass of the galaxy located outside the radius R
• E) the mass of luminous matter within the radius R

---

Definitions:

Union Shop Contracts

Agreements requiring employees to join a union within a certain period after being hired.

Right-To-Work State

A state that prohibits agreements between labor unions and employers that make membership, payment of union dues, or fees a condition of employment, either before or after hiring.

Moderate Union

A labor union that adopts a less confrontational stance towards employers and focuses on negotiation and compromise.

Out-Of-Turn Promotion

A promotion given to an employee ahead of others, typically bypassing the standard protocol or hierarchy.