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If the speed of sound is 340 m/s, the two lowest frequencies of an 0.5 m organ pipe, closed at one end, are approximately:
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The Environmental Protection Agency, a federal agency tasked with protecting human health and the environment through regulations and oversight.
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An outcome or result that occurs without the intent of the involved parties, often unexpected or unplanned.
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United States federal law designed to control air pollution on a national level by setting emissions standards for industries and vehicles.
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