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Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25Ëš e? this would have obliterated the city.
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The mass of the sun is 1.99×1030kg and its distance to the earth is 1.50×1011m. what is the gravitational force of the sun on the earth?
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What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?
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Why does a straw look broken viewed in a glass of water?...
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