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2* What is the efficiency of a machine that requires 120. J of input energy to do 35. J of "useful work output"?โ
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If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
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Which composition of water moves to begin a deepwater current?
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The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?
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It is necessary to determine the specific heat of an unknown object. the mass of the object is 201.0g it is determined experimentally that it takes 15j to raise the temperature 10ยฐc. what is the specific heat of the object? 3,020,000 j/kg โ k 1500 j/kg โ k 0.00130 j/kg โ k 7.46 j/kg โ k
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2* What is the efficiency of a machine that requires 120. J of input energy to do 35. J of "useful w...
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