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Aforklift raises a box above the floor and does 2,000 j of work. if the forklift motor consumes 3,000 j of electrical energy from the battery to raise the box, what is the efficiency of the lift?
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What is the period of a wave traveling 5 m/s if its wavelength is 20 m/s
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An object that weighs 75n is pulled on a horizontal surface by a horizontal pull of 50 n to the right. the friction force on this object is 30 n to the left. what is the acceleration of the object?
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You want to create an electric field vector E = < 0, 5 104, 0> N/C at location < 0, 0, 0>...
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