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A car goes from 20 m/s to 70 m/s in 4 seconds, what is its acceleration?
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J. j. thomson’s experiment disproved the theory that an atom
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Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space? the cloud is extremely hot. the cloud is visible primarily because it reflects light from nearby stars. the cloud is cool and lies between you and a hot star. the cloud is cool and very dense, so that you cannot see any objects that lie behind it.
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What explosion in the upper solar atmosphere releases about as much energy as millions of 100-megaton hydrogen bombs exploding simultaneously?
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A car goes from 20 m/s to 70 m/s in 4 seconds, what is its acceleration?...
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