Which Galilean moons of Jupiter show evidence for subsurface oceans of water beneath their icy crusts?

A) Europa and Ganymede
B) all four show evidence for subsurface oceans
C) Europa
D) Europa, Ganymede, and Callisto


D

Physics & Space Science

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The lookback time of the cosmological horizon is

A) the age of the universe. B) the Big Bang . C) 1 billion years. D) 10 billion years.

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An astronomer claims to have measured the spectrum of a nearby galaxy and finds that the spectral lines are slightly blueshifted. This result is unreliable because it violates Hubble's law.

Answer the following statement true (T) or false (F)

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The average temperature of the typical dark dust cloud is about

A) 0 K. B) 2.73 K. C) 100 K. D) 3,000 K. E) 6,000 K.

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Consider each of the following processes. Is the process consistent (C) or inconsistent (D) with the limitations on equation T8.12 (that N be fixed and that the process not involve any energy transfer that is neither heat nor work due to a quasistatic volume change)? A glass of milk is spilled on the floor.

C. Consistent D. Inconsistent

Physics & Space Science