What is the time it takes the Earth to make one revolution around the sun called?
A-equinox
B...
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The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call
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Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.
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An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.
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What produces wave a)sound b) heats c)transfer of energy d)vibrations
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