Recent measurements of the temperature fluctuations in the cosmic microwave background radiation support the prediction of inflation that the overall geometry of the universe is flat
Indicate whether the statement is true or false
TRUE
Physics & Space Science
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An atom is ionized if one of its electrons jumps to a higher energy level in the atom
Indicate whether the statement is true or false
Physics & Space Science
Calculate the percentage composition by mass (to the nearest 0.1) of each element in sodium sulfide, Na2S
Physics & Space Science
When water changes from a vapor phase to a liquid phase, it
A) loses energy. B) gives off energy. C) gains energy. D) radiates energy.
Physics & Space Science
How have astronomers interpreted the unexpectedly fast rotation of galaxies?
A.) Scientific measurements must be wrong. B.) Galaxies may be breaking up. C.) There must be a lot of dark matter whose gravity can be felt but not seen. D.) These galaxies must have had collisions. E.) B, C, and D.
Physics & Space Science