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1. The frequency of a wave is 4 Hz. If the wavelength is 2 m, how fast are the waves moving?
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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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Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.
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1. The frequency of a wave is 4 Hz. If the wavelength is 2 m, how fast are the waves moving?...
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