We Are Measuring the Spectra of Two Hydrogen Gas Clouds

question 15

Multiple Choice

We are measuring the spectra of two hydrogen gas clouds. The laboratory frame wavelength of one hydrogen line is 656.2 nm. Cloud A's emission line wavelength is 660.1 nm and Cloud B's emission line wavelength is 670.1 nm. What can we conclude about these clouds?

• A) They are both approaching us, and Cloud B is approaching faster than Cloud A.
• B) They are both receding from us, and Cloud B is receding faster than Cloud A.
• C) They are both approaching us, and Cloud A is approaching faster than Cloud B.
• D) They are both receding from us, and Cloud A is receding faster than Cloud B.

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Definitions:

Current Price

The present market value or selling price of a good, service, or asset.

Product

An item or service created as a result of a process, intended for the market.

Absorption Costing

A financial tracking approach that incorporates all costs associated with producing an item, such as direct materials, direct labor, along with all manufacturing overhead costs, whether they are fixed or variable.

Markup Percentage

The percentage added to the cost of goods to achieve a selling price, representing profit margin.