Laboratory Measurements Show Hydrogen Produces a Spectral Line at a Wavelength

question 42

Multiple Choice

Laboratory measurements show hydrogen produces a spectral line at a wavelength of 486.1 nanometers (nm) .A particular star's spectrum shows the same hydrogen line at a wavelength of 486.0 nm.What can we conclude?

• A)The star is moving away from us.
• B)The star is getting hotter.
• C)The star is moving toward us.
• D)The star is getting colder.

Recognize the phenomenon of Rh incompatibility and its implications.

Identify the impact of environmental factors like pollution on infant health and development.

Understand global disparities in childbirth practices and settings.

Comprehend the effect of pollutants and infections on prenatal and infant health.

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Definitions:

Contusion

A Contusion is a bruise resulting from blunt trauma that causes bleeding under the skin without breaking the skin's surface.

Strain

An injury to a muscle or tendon resulting from overstretching or tearing.

Tear

A drop of clear salty liquid secreted by glands in your eyes, often resulting from emotion or irritation.

Perfectly Horizontal

A line on a graph that shows a constant value, indicating no change in the variable it represents across different situations.