What do the densities of the moons of Jupiter tell us about their origin?
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Ganymede and Callisto have low densities of only 1.9 and 1.8 g/cm3, respectively, meaning they must consist roughly of half rock and half ice. Observations of their gravitational fields by the Galileo spacecraft reveal that Ganymede has a rocky or metallic core and lower-density icy exterior, so it is differentiated. Callisto is apparently only partly differentiated. Both moons interact with Jupiter's magnetic field in ways that show they probably have mineral-rich layers of liquid water 100 km or more below their icy crusts.
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What is light?
A. Light is radiant energy in the form of a wave of electromagnetic energy. B. Light is radiant energy that can be mathematically treated as a wave or particle of energy. C. Light is radiant energy in the form of a stream of energy particles, called photons. D. None of these choices are correct.
An object oscillates such that its position x as a function of time t obeys the equation x = (0.222 m) sin(314 s-1 t), where t is in seconds
(a) In one period, what total distance does the object move? (b) What is the frequency of the motion? (c) What is the position of the object when t = 1.00 s?
The slope of a distance vs. time graph is the
a. distance. b. velocity. c. acceleration. d. none of the above.
Identify at least three patterns of motion or planetary arrangement/location that a theory of solar system formation should be able to explain.
What will be an ideal response?