Examlex
The spectrum of a galaxy is observed to have an H emission line at a wavelength of 856.3 nm. What is its distance if the Hubble constant is 70 km/s/Mpc? Note that the rest wavelength of the H emission line is 656.3 nm.
Less Dense
Refers to materials having a lower mass per unit of volume, indicating fewer particles or less mass in a given space.
Back Pain
A common physical discomfort or ailment affecting the lumbar, thoracic or cervical regions of the spine, often due to strain, injury or other health conditions.
Eating Disorder
A mental disorder characterized by abnormal or disturbed eating habits that negatively affect a person's health or well-being.
Binges
Episodes of excessive indulgence in activities such as eating, drinking, or shopping, typically seen in context with disorders or as occasional behavioral excesses.
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