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A 0.75kg key is attached to the end of a 0.25m lanyard. The key is swung in a horizontal circle and has an acceleration of 2.5m/s/s. a. Calculate the velocity of the key b. Calculate the centripetal force acting on the key
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Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?
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Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of
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A 0.75kg key is attached to the end of a 0.25m lanyard. The key is swung in a horizontal circle and...
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