Which of the following is not a piece of evidence supporting the idea that Europa may have a subsurface ocean?
A) Astronomers have detected small lakes of liquid water on Europa's surface.
B) Europa has a magnetic field that appears to be induced by Jupiter's magnetic field.
C) Photos of Europa's surface show regions that appear to consist of jumbled icebergs frozen in place.
D) Europa's surface shows few impact craters.
A) Astronomers have detected small lakes of liquid water on Europa's surface.
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Pluto was discovered in:
A) ancient times. B) 1789. C) 1859. D) 1930. E) 1992.
Kirchhoff's Rules: A multiloop circuit is shown in the figure. Find the current I1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)
A. -2 A B. 2 A C. 6 A D. -5 A E. 0 A
The loudness of a sound wave is determined by its ______________
Fill in the blank(s) with correct word