What is the relationship between density and distance for the four Galilean moons of Jupiter?
A) density increases with increasing distance
B) density remains constant with distance
C) density first decreases and then increases with distance
D) density decreases with distance
D
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Why do Earth and Venus have active interiors, while Mercury and Mars do not?
A. Earth and Venus have rapid rotations, while Mercury and Mars do not. B. Earth and Venus are much more massive, and cool more slowly, than Mars and Mercury. C. Mercury and Mars have small iron cores, while Earth and Venus have large ones. D. All of these choices are correct. E. None of these choices is correct.
Two planets have the same surface gravity, but planet B has twice the mass of planet A. If planet A has radius r, what is the radius of planet B?
A) r B) r C) 2r D) 4r E) r/
In the context of the double-slit experiment, quantum uncertainty refers to
A) the fact that the particles of matter or radiation are instantaneously replaced by a spread-out matter field or EM field when the particles impact the screen. B) the fact that the electron beam or light beam goes through both slits rather than only one. C) our inability to precisely predict the point at which a spread-out matter field or EM field will interact with the screen. D) the fact that the entire matter field or EM field instantaneously collapses to the single interaction point when the field interacts with the screen. E) the fact that each interaction with the screen occurs over a broad area of the screen.
330 g of water at 55°C are poured into an 855 g aluminum container with an initial temperature of 10°C. The specific heat of aluminum is 900 J/(kg?K)
What is the final temperature of the system, assuming no heat is exchanged with the surroundings? A) 28°C B) 39°C C) 31°C D) 33°C E) 35°C