An Observer Is Moving in Space Toward a Distant Star

question 89

Multiple Choice

An observer is moving in space toward a distant star at 100 km/s while the star is moving toward the observer at 250 km/s;the relative velocity being 350 km/s of approach.What relative change in frequency of the light from the star as seen by the observer? (The speed of light in space is 3.00 × 10⁵ km/s) .

• A) 0.12% increase
• B) 0.12% decrease
• C) 0.039% increase
• D) 0.35% decrease
• E) ​0.35% increase

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Definitions:

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The process of assessing the condition or quality of something by inspecting its outer surface or features.

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The inability to recall or recognize information that was previously encoded into the brain's memory.

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A physiological response to perceived harmful events or threats, preparing the body to either confront or avoid the danger.