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A force acting on an object moving along the x-axis is given by the equation F(x)= (14x- 3x2) N where x is in meters. How much work is done with this force as the object moves from x= -1to x= 2?
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through a thunderstorm 38 s elapses between observing a lightning flash and hearing the resulting thunder about how far
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the doppler shift of ultrasonic waves can gauge the speed of blood in an artery if the frequency of the stationary
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