Astronomers Can Determine the Amount of Mass in a Cluster

question 171

Multiple Choice

Astronomers can determine the amount of mass in a cluster of galaxies by observing its gravitational interactions. How much of this mass is luminous matter?

• A) 1-2%
• B) 10-20%
• C) 50%
• D) 80-90%

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Definitions:

Promotional Efforts

Marketing activities aimed at increasing awareness, interest, and sales of a product or service through various strategies and channels.

Objective and Task Budgeting

A method of budget setting where a company first defines its objectives and then estimates the cost of all tasks needed to achieve these objectives.

Promotion Objectives

Refers to the goals a company aims to achieve through its promotional activities, such as increasing brand awareness or sales.

Promotion Cost

Expenses incurred to market and advertise a product, service, or brand to increase sales or awareness.