According to the first law of thermodynamics, the sum of the heat gained by a system and the work done on that same system is equivalent to which of the following?
a. entropy change
b. internal energy change
c. temperature change
d. specific heat
b
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Double-pane windows contain nitrogen rather than air to prevent
A) gas escape. B) thermal conduction. C) condensation. D) heat flow.
The average speed of stars relative to the Sun in the solar neighborhood is about 20 km/s. Suppose you discover a star in the solar neighborhood that is moving relative to the Sun at a much higher speed, say 220 km/s
What kind of orbit does this star probably have around the Milky Way? In what part of the galaxy does it spend most of its time? Explain.
How is it possible that the Moon might have some water ice today?
A) Ice brought by comet impacts may be frozen in craters near the Moon's poles. B) Ice is continually supplied to the Moon by impacts, and some of this ice will therefore be found almost anywhere on the Moon at all times. C) Some cold regions of the Moon may still have ice that originally formed from the condensation of water released by outgassing. D) The Moon has significant amounts of water bonded in its surface rock, so some of this water is frozen as ice.
Describe the circulation of Jupiter's belts and zones
What will be an ideal response?