A Spectral Line of a Certain Star Is Observed to Be

question 62

Multiple Choice

A spectral line of a certain star is observed to be "red shifted" from a wavelength of 500 nm to a wavelength of 1500 nm.Interpreting this as a Doppler effect, the speed of recession of this star is:

• A)0.33c
• B)0.50c
• C)0.71c
• D)0.80c
• E)c

Comprehend the principles of combustion and energy conservation in chemical processes.

Analyze the physical properties of materials to determine their mass based on calorimetric data.

Understand the basic life cycle of fungi, including genetic stages and ploidy levels.

Identify the ecological roles and symbiotic relationships of different fungal groups.

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