How much kinetic energy does the block gain

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Q. A 0.40 kg block initially at rest on a frictionless horizontal surface is acted upon by a force of 3.0 N for a distance of 4.5 m. How much kinetic energy does the block gain?

Q. Two small insulating spheres with radius 4.00×10-2 m are separated by a large center-to-center distance of 0.500 m. One sphere is negatively charged, with net charge -2.45 mu C, and the other sphere is positively charged, with net charge 3.25 mu C. The charge is uniformly distributed within the volume of each sphere.

Reference no: EM1362677

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