When a person whirls a rock on the end of a string and maintains it in uniform circular motion, the force exerted on the rock is most accurately referred to as?

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How will it be possible to kindle fire, if we had no matches ?

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Why dies a boat-man push the bank with an oar, when he wants to clear his boat off the bank?

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What is a crest?

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what is ngative current

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Why ate the telegraph wires kept a little loose ?

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what is momentum?

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For two objects separated by a distance d, if the mass of one of the objects is doubled, what will happen to the gravitational attraction between them?

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What does gravitational force depend on?

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If a plane is in the air and there is a fly flying inside the plane does the plane get heavier when the fly lands?

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When are intermolecular forces the strongest?

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Explain the Strain ?

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