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A force of 50N is applied to the end of a lever to lift a rock that is 350N . what is the mechanical advantage of a lever?
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Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?
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Convection occurs when thermal energy is transferred by the movement of
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You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked
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A force of 50N is applied to the end of a lever to lift a rock that is 350N . what is the mechanical...
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