How many more times is the atmospheric pressure in Jupiter's core greater than the atmospheric pressure at Earth's surface?
A) 100 thousand
B) 100 million
C) 1 million
D) 10 thousand
E) 10 million
B
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When a formal definition of a planet in the solar system was adopted, Pluto was reclassified as a dwarf planet. What characteristic of planets does NOT describe Pluto?
A) Planets orbit the Sun. B) Planets are approximately spherical. C) Planets have cleared the neighborhood around their orbit. D) Planets orbit in ellipses with low eccentricity. E) Planets orbit in or very near the ecliptic plane.
The zone of avoidance is the region around the massive black hole found at the center of the Galaxy.
Answer the following statement true (T) or false (F)
At present the universe is expanding, but we are not certain if this expansion will continue forever, come to a stop, or if the universe will ultimately collapse back into itself
What observational tests are possible to test among these three possibilities?
Two solid spheres, both of radius 5 cm, carry identical total charges of 2 µC. Sphere A is a good conductor. Sphere B is an insulator, and its charge is distributed uniformly throughout its volume. How do the magnitudes of the electric fields they separately create at a radial distance of 6 cm compare?
1. EA > EB = 0 2. EA > EB > 0 3. EA = EB > 0 4. 0 < EA < EB 5. 0 = EA < EB