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A 89 kg cart initially sits at rest on a flat, frictionless track. This cart of...

A 89 kg cart initially sits at rest on a flat, frictionless track. This cart of charge 0.005 C is placed in an initial potential of 939,388 V, which launches it toward a spring with a spring constant of 462 N/m. After being launched, the cart crashes into the spring that brings it to a stop. How far is the spring compressed in order to stop the cart?

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