If a Hydrogen Emission Line Appears at 656

question 24

Multiple Choice

If a hydrogen emission line appears at 656.2 nm in the laboratory, what can we say about a cloud of hydrogen gas, with an emission line at 680.2 nm?

• A) It is receding away from us.
• B) The location of the emission line has nothing to do with speed.
• C) It is neither receding nor approaching us.
• D) It is approaching us.

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Definitions:

Corporations

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A Chinese term describing the network of personal connections that facilitate business and other dealings, emphasizing mutual benefit and respect.

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