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Physics, 23.06.2019 00:30
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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Physics, 23.06.2019 02:00
2) why do satelites not fall while revolving around the earth?
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1. calculate the speed for a car that went a distance of 125 kilometers in 2 hours time....
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