An Astronomer Observes Electromagnetic Waves Emitted by Oxygen Atoms in a Distant

question 51

Multiple Choice

An astronomer observes electromagnetic waves emitted by oxygen atoms in a distant galaxy that have a frequency of 5.710 × 10¹⁴ Hz. In the laboratory on earth, oxygen atoms emit waves that have a frequency of 5.841 × 10¹⁴ Hz. Determine the relative velocity of the galaxy with respect to the astronomer on the earth. Note: The speed of light is 2.9979 × 10⁸ m/s.

• A)6.724 × 10⁶ m/s, away from earth
• B)6.724 × 10⁶ m/s, toward earth
• C)2.931 × 10⁸ m/s, away from earth
• D)4.369 × 10⁴ m/s, toward earth
• E)4.369 × 10⁴ m/s, away from earth

Identify the limitations and dangers of making generalizations from specific cases or vivid instances.

Understand the role and importance of surveys in collecting self-reported data.

Recognize the use of case studies for in-depth examination and their potential in suggesting future research directions.

Understand the purpose and methodology of correlational research in identifying relationships between variables.

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Definitions:

Macrophages

A type of white blood cell part of the immune system, involved in the detection, phagocytosis, and destruction of bacteria and other harmful organisms.

Tumor Necrosis Factor (TNF)

A cell signaling protein (cytokine) involved in systemic inflammation and is part of the immune system's response to infections and diseases.

Inflammatory Response

The body's biological reaction to harmful stimuli, infections, or injuries, aimed at eliminating the cause and restoring tissue health.

Cytokines

Small proteins released by cells, particularly those in the immune system, that act as signaling molecules to regulate immunity, inflammation, and hematopoiesis.