A force acting upon an object to cause a displacement is known as _________________.
A) Energy
B) Potential
C) Kinetic
D) Work
Answer: D) Work
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Michelson and Morley demonstrated that the speed of light is ________ of the motion of the observer
Fill in the blank(s) with correct word
According to the planetary migration model, the jovian planets are thought to have formed:
A) in the orbit where they are now. B) further from the Sun than they are now. C) in another solar system. D) closer to the Sun than they are now. E) None of the above.
Suppose it turns out that one in 1 million stars has a planet that at some point in its history is home to an advanced civilization. Then the total number of civilizations that have arisen in our galaxy would be closest to
A) 4. B) 40. C) 400. D) 4,000. F) 40,000. E) 400,000.
Living next to a lake near volcanic activity can be deadly. There can be large amounts of CO2 dissolved in the water. An earthquake, landslide, or even rapid cooling can trigger the release of the CO2, causing death nearby. The water of the lake in these cases is
a. an unsaturated solution. b. a saturated solution. c. a supersaturated solution. d. a completely unsaturated solution.