What is differentiation in planetary geology?
A) the process by which gravity separates materials according to density
B) the process by which different types of minerals form a conglomerate rock
C) any process by which a planet's surface evolves differently from another planet's surface
D) any process by which one part of a planet's surface evolves differently from another part of the same planet's surface
E) any process by which a planet evolves differently from its moons
A
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In a paramagnetic material the magnetic susceptibility is
(a) Linearly dependent upon temperature. (b) Independent of temperature. (c) A nonlinear function of temperature. (d) Inversely dependent upon temperature.
A sound wave radiates from a source in all directions. If the power of the sound source is 200 watts, then the intensity level of the sound wave 1000 m from the source is (in dB)
A. 62.8. B. 66.0. C. 68.5. D. 70.5. E. 72.0.
In terms of dark, smoother maria and cratered highlands, which Jovian moon most resembles the near side of our own?
A) Titan B) Io C) Europa D) Triton E) Ganymede
A certain source of sound waves radiates uniformly in all directions. At a distance of 20 m from the source the intensity level is 51 db
What is the total acoustic power output of the source, in watts? (Note: The reference intensity I0 is 1.0 × 10-12 W/m2.)