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An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the ambulance moves toward him? less than 450 hz more than 450 hz 450 hz 0 hz
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Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?
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What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud
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The name of the si unit for force is the joulenewtonwatt....
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