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Geography, 23.06.2019 00:10, Armendariz1
Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before
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Geography, 23.06.2019 01:00, birdman9416
Name one type of data that h-r diagrams do not show.
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The theory of plate tectonics explains the movement of the plates by convection cells in the earth's...
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