A5 kg block moves in a straight line on a horizontal frictionless surface under the influence of a force that varies with position as shown in the figure. the scale of the figure's vertical axis is set by fs = 45 n. how much work is done by the force as the block moves from the origin to x = 8.0 m?

Acharge of 8.4x10^-4 c moves at an angle of 35 degrees to a magnetic field that has a field strength of 6.7x10^-3 t. if the magnetic force is 3.5 x10 ^-2 n, how fast is the charge moving?

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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final