The planets with known rings are Saturn, Neptune, ______________, and Jupiter
Fill in the blank(s) with correct word
Uranus
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How do observations of galaxies at different distances help us learn about galaxy evolution?
A) Observations of different distances show galaxies of different ages and therefore different stages of evolution. B) Observations of the most distant galaxies will allow us to observe the birth of galaxies. C) We can observe galaxies at different distances merge, helping us learn how mergers affect evolution. D) We can observe the evolution of a single galaxy over time. E) We can see what our galaxy used to look like over time, helping us theorize about the physical processes that led to its current appearance.
Venus is visible in the west after sunset or in the east before sunrise
Indicate whether the statement is true or false
Overall, Jupiter's composition is most like that of
A) the Sun. B) Earth. C) a comet. D) an asteroid.
Niobium metal becomes a superconductor (with electrical resistance equal to zero) when cooled below 9.00 K. If superconductivity is destroyed when the surface magnetic field exceeds 0.100 T, determine the maximum current a 5.31-mm-diameter niobium wire can carry and remain superconducting. (µ0 = 4? × 10^?7 T?m/A)
a. 2660 A b. 423 A c. 211 A d. 1330 A e. 4170 A