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Ed is doing a survey of popular colors for cars for a school report. He decides to take a sample by sitting near a busy intersection and noting the colors of the cars as they go by him. Ed counts 23 black
answered
Dec 22, 2017
Mathematics
high-school
0
votes
52.7k
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What interacted directly with the photographic plates to cause images in Becquerel’s experiment? A...uranium salt B...radiation C...unstable nuclei D...radioisotopes
answered
Feb 22, 2017
Chemistry
high-school
5
votes
63.2k
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