What do the densities of the moons of Jupiter tell us about their origin?
What will be an ideal response?
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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Identify at least three patterns of motion or planetary arrangement/location that a theory of solar system formation should be able to explain.
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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.