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Eight million kilograms of water flows over Niagara Falls every second and drops 50 meters to the bottom. What is the power available at the bottom if we could harness it to make electricity?β
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When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.
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A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?
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A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.
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