Examlex
Stars A and B have the same radius, but the spectrum of star A peaks at a wavelength of 500 nm, whereas star B's spectrum peaks at 1000 nm. What is the ratio of the luminosity of star A to the luminosity of star B?
Mothers
Female parents who have given birth to, adopted, or raised a child, providing care, affection, and guidance.
Depressed
A state characterized by persistent feelings of sadness, dejection, and lack of interest or pleasure in activities, often linked to various mental health conditions.
Anxious
Feeling anxious, uneasy, or apprehensive, usually in anticipation of an upcoming event or a situation whose result is not yet known.
Older Adults
Individuals who are in the later stage of life, often classified as senior citizens, typically aged 65 and older, facing unique health and psychological challenges.
Q45: How many electrons surround the nucleus of
Q69: Observations of the exoplanet HD 209458 b
Q77: Our present understanding of the nature of
Q84: The present understanding of the existence of
Q103: MOST moderate energy cosmic rays originate from<br>A)
Q152: To use Wien's law to find the
Q167: The amount of radiation emitted by a
Q198: A scientific theory is accepted as the
Q280: The smooth surfaces of the lunar maria
Q333: In the ancient Greek era, it was